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Addis Ababa University
1.
Angaw, Yonas.
Assessment of temporary hearing loss, associated factors and measuring noise levels among workers in ayka Addis textile factory (Textile Factory Q) in Oromia region, Ethiopia, 2019.
Degree: 2019, Addis Ababa University
URL: http://etd.aau.edu.et/handle/123456789/21065
► Introduction:-Development of modern automated machines in industries has considerably decreased the physical burden of workers in addition to increasing the productivity of the industries resulting…
(more)
▼ Introduction:-Development of modern automated machines in industries has considerably
decreased the physical burden of workers in addition to increasing the productivity of the
industries resulting in noise pollution. Noise exposure above the limit value of 90 dB (A) is
known to cause temporary
hearing loss among exposed workers.
Objective: - To assess temporary
hearing loss, associated factors and measuring noise levels
among workers in textile factory Q.
Methods and materials: - A cross-sectional study design was employed from January 15 to
April 30, 2019. The data collection methods were observational checklist, self-administered
questionnaire and aerial and personal noise level measurements. Department heads and
environmental health proffesionals was participated for data collection. A total of 406 using
computerized simple random sampling and 27 individuals using Homogenous Exposure Groups
were included respectively for the self-adminstered questionnaire and personal noise exposure
measurements. Data was entered using Epi-data version 4.2 and analyzed using SPSS version
21. Also 95% confidence interval was calculated for the independent variables and P value <0.05
had included to show the significance of the association.
Results: - The questionnaire was completed by 388 (95.6% response rate) production section
workers, of which 254 (65.5%) were females and 134 (34.5%) were males. About One hundred
ninty (49.0%, COR=1.53; 95% CI= [1.15-2.03]) workers reported that they have at least one
temporary
hearing loss problems during working time in the textile factory. None of the
participants reported the use of
hearing protective devices and maximum LAeq,
noise levels
were recoeded in spinning II, 89.1+5.9 dBA and knitting, 89+4.3dBA. There was significant
association between working departments and temporary
hearing loss of workers.
Conclusion: - The presented study demonstrated that work force in the spinning and knitting
departments of the textile factory had high prevalence of temporary
hearing loss.
Recommendations: - The textile factory should implement control measures such as
engineering and administrative (rotation of workers) controls with providing
hearing protective
devices to reduce the noise exposure among workers.
8hr
Advisors/Committee Members: Dr.Kumie, Abera (MD, MSc, PhD.) (advisor), Nega, Ansha(BSc, MSc, PhD Fellow) (advisor).
Subjects/Keywords: Hearing loss
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APA ·
Chicago ·
MLA ·
Vancouver ·
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APA (6th Edition):
Angaw, Y. (2019). Assessment of temporary hearing loss, associated factors and measuring noise levels among workers in ayka Addis textile factory (Textile Factory Q) in Oromia region, Ethiopia, 2019.
(Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/handle/123456789/21065
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Angaw, Yonas. “Assessment of temporary hearing loss, associated factors and measuring noise levels among workers in ayka Addis textile factory (Textile Factory Q) in Oromia region, Ethiopia, 2019.
” 2019. Thesis, Addis Ababa University. Accessed March 07, 2021.
http://etd.aau.edu.et/handle/123456789/21065.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Angaw, Yonas. “Assessment of temporary hearing loss, associated factors and measuring noise levels among workers in ayka Addis textile factory (Textile Factory Q) in Oromia region, Ethiopia, 2019.
” 2019. Web. 07 Mar 2021.
Vancouver:
Angaw Y. Assessment of temporary hearing loss, associated factors and measuring noise levels among workers in ayka Addis textile factory (Textile Factory Q) in Oromia region, Ethiopia, 2019.
[Internet] [Thesis]. Addis Ababa University; 2019. [cited 2021 Mar 07].
Available from: http://etd.aau.edu.et/handle/123456789/21065.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Angaw Y. Assessment of temporary hearing loss, associated factors and measuring noise levels among workers in ayka Addis textile factory (Textile Factory Q) in Oromia region, Ethiopia, 2019.
[Thesis]. Addis Ababa University; 2019. Available from: http://etd.aau.edu.et/handle/123456789/21065
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Melbourne
2.
Carew, Peter.
Mild and moderate congenital hearing loss in childhood: trends and associations with language outcomes.
Degree: 2018, University of Melbourne
URL: http://hdl.handle.net/11343/214534
► Background: Children born with mild and moderate bilateral hearing loss experience poorer language outcomes than peers without hearing loss. Following implementation of universal newborn hearing…
(more)
▼ Background: Children born with mild and moderate bilateral hearing loss experience poorer language outcomes than peers without hearing loss. Following implementation of universal newborn hearing screening (UNHS) in the early 2000s, most children are now fitted with hearing aids very early, even without firm evidence of efficacy. Filling this knowledge gap would support clinicians and families to make appropriate decisions for affected children.
Aims: In population-based samples of children born with mild and moderate bilateral hearing loss in two age groups, I aimed to describe the: 1) language and child wellbeing outcomes at 5-8 years of age examined both by system of hearing loss detection and age at detection; 2) relationship between measures of hearing ability (aided and unaided) and speech/language outcomes at 5-7 years of age; and 3) expressive vocabulary of children at age 1-3 years, with comparison to same-aged children without hearing loss.
Methods: All participants were drawn from population-based studies or databanks with comparable measures and demographic composition in Victoria and New South Wales. In Aim 1, 21 directly assessed children (5-7 years) were analysed with 125 children (5-8 years) from historical hearing loss cohorts and 1217 children (7 years) without known hearing loss. For Aim 2, hearing aid data were obtained for 19 directly assessed children. In Aim 3, questionnaire data were compared between 20 children (1-3 years) with and 1711 children (2 years) without known hearing loss. Language was assessed or parent-reported, with additional data collected by parent questionnaire. Aim 1 was analysed using unadjusted and adjusted regression models, with potential confounders identified a priori. For Aims 2 and 3, analyses were descriptive and exploratory.
Results: Outcomes for 5-7 year olds with moderate loss improved across detection systems spanning opportunistic through to UNHS (mean expressive language p for trend .05, receptive vocabulary p for trend .06) and were better when diagnosed before age 6 months. Children with mild loss did not show similar benefit, despite trends toward earlier diagnosis and hearing aid fitting. Children with mild-moderate loss had poorer expressive language than children without loss (adjusted mean difference -8.9 points, 95% CI -14.7 to -3.1). Audibility measures correlated with unaided hearing (r=-.60 to -.79, p=.02 to <.001) and speech recognition ability (r=-.63 to -.73, p=.04 to .01). Unaided and aided hearing measures did not show associations with speech and language. On average 1-3 year olds with, versus without, hearing loss had lower expressive vocabulary raw scores even though older at assessment. Language of children with mild loss was on average 9 months behind expectations (SD 5.6 months), moderate loss on average 6.6 months behind (SD 6.7 months).
Conclusions: Children with mild and moderate hearing loss show early language delays that persist into primary school. Children with moderate loss showed some benefit from earlier…
Subjects/Keywords: Mild hearing loss; moderate hearing loss; congenital; hearing loss; language; language outcomes; childhood hearing loss
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Carew, P. (2018). Mild and moderate congenital hearing loss in childhood: trends and associations with language outcomes. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/214534
Chicago Manual of Style (16th Edition):
Carew, Peter. “Mild and moderate congenital hearing loss in childhood: trends and associations with language outcomes.” 2018. Doctoral Dissertation, University of Melbourne. Accessed March 07, 2021.
http://hdl.handle.net/11343/214534.
MLA Handbook (7th Edition):
Carew, Peter. “Mild and moderate congenital hearing loss in childhood: trends and associations with language outcomes.” 2018. Web. 07 Mar 2021.
Vancouver:
Carew P. Mild and moderate congenital hearing loss in childhood: trends and associations with language outcomes. [Internet] [Doctoral dissertation]. University of Melbourne; 2018. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/11343/214534.
Council of Science Editors:
Carew P. Mild and moderate congenital hearing loss in childhood: trends and associations with language outcomes. [Doctoral Dissertation]. University of Melbourne; 2018. Available from: http://hdl.handle.net/11343/214534

University of the Western Cape
3.
Davids, Ronel Sanet.
Experiences of hearing parents regarding their child’s hearing loss
.
Degree: 2013, University of the Western Cape
URL: http://hdl.handle.net/11394/4820
► Overwhelming evidence suggests that 90% of children with a hearing loss are born to hearing parents. Research indicates that often these hearing parents are ill-informed…
(more)
▼ Overwhelming evidence suggests that 90% of children with a
hearing loss are born to
hearing parents. Research indicates that often these
hearing parents are ill-informed about the cause and type of
hearing loss their child has, leading the
hearing parents to feelings of grief and disempowerment. Many
hearing parents at the time of the diagnosis experience emotional turmoil as the diagnosis is often unexpected, resulting in a plethora of questions asked. The research approach for the study was qualitative in nature as it set out to explore and describe the experiences of
hearing parents of their child’s
hearing loss. A phenomenological strategy of design was employed to capture the lived experience from the
hearing parents. Data was collected by means of unstructured individual in-depth interviews with 11
hearing parents. Volunteer and snowball sampling were implemented so as to access
hearing parents whose children had been diagnosed with
hearing loss. Data was analysed according to Creswell (2007) and Klenke (2008) and the trustworthiness of the qualitative study was evaluated against the criteria that Guba described in Krefting (1991). Ethical considerations, such as voluntary participation, informed consent, confidentiality, anonymity, no harm done and debriefing, were adhered to. After the conclusion of the research analysis, the findings of the research were discussed and recommendations were made. The findings of the recommendations spoke to the better understanding of the emotions and challenges of
hearing parents as well as putting forward suggestions for supportive coping mechanisms to be put in place to support
hearing parents whose children have been diagnosed with a
hearing loss.
Advisors/Committee Members: De Jager, M.S (advisor).
Subjects/Keywords: Hearing parents;
Children with hearing loss;
Diagnosis;
Hearing loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Davids, R. S. (2013). Experiences of hearing parents regarding their child’s hearing loss
. (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/4820
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Davids, Ronel Sanet. “Experiences of hearing parents regarding their child’s hearing loss
.” 2013. Thesis, University of the Western Cape. Accessed March 07, 2021.
http://hdl.handle.net/11394/4820.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Davids, Ronel Sanet. “Experiences of hearing parents regarding their child’s hearing loss
.” 2013. Web. 07 Mar 2021.
Vancouver:
Davids RS. Experiences of hearing parents regarding their child’s hearing loss
. [Internet] [Thesis]. University of the Western Cape; 2013. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/11394/4820.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Davids RS. Experiences of hearing parents regarding their child’s hearing loss
. [Thesis]. University of the Western Cape; 2013. Available from: http://hdl.handle.net/11394/4820
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Newcastle
4.
Nealon, Michele Jan.
Workplace experiences of employees with hearing impairment.
Degree: MPhil, 2018, University of Newcastle
URL: http://hdl.handle.net/1959.13/1389602
► Masters Research - Master of Philosophy (MPhil)
This research investigated the experiences of Australian employees with hearing impairment who communicate orally in the workplace. Using…
(more)
▼ Masters Research - Master of Philosophy (MPhil)
This research investigated the experiences of Australian employees with hearing impairment who communicate orally in the workplace. Using mixed methods research, one hundred and fifty-nine people with hearing impairment responded to a sixty-one item online questionnaire, fifteen people participated in one of three focus groups and three people participated in an in-depth interview. The online questionnaire collected demographic information of the cohort and solicited information on the individual’s use of assistive technologies, experiences accessing workplace modifications, discrimination and knowledge of Australian Government support programs. The focus groups set out to gather additional qualitative context to the responses from the online questionnaire on the experiences of employees requesting workplace modifications, the value of supportive colleagues and illuminative descriptions of a workplace utopia - an environment that employees believed would allow them to offer their very best contributions to the workplace. The first in-depth interview involved an individual who chooses not to use any assistive technology, discussing her choice and subsequent experiences in the workplace, another who has experienced but not formally reported workplace discrimination in an organisation that publicly celebrates its diversity and inclusion platform while the third in-depth interview was with an individual who works in the deafness/education sector and included a discussion of the inclusion practices of professionals in the sector. Using the complementary strengths of quantitative and qualitative methodology, the research results were analysed separately and two set of findings were produced. The integration of quantitative and qualitative data in the mixed methods reporting was completed with an eye to providing a deeper understanding of the data from one source alone. Where previously published literature comments on similar findings, references and connections are noted. The key results of the research include those that demonstrate that the disconnected or even isolated nature of the individuals in the cohort means they have few opportunities to discuss the communication challenges faced or obtain peer support in overcoming the barriers experienced in the workplace. Further, despite the difficulties experienced communicating in the workplace, it became clear that the cohort has few opportunities to trial existing technologies. Surprisingly, a third of respondents to the study had never had contact with any of the Australian support or advocacy organisations designed to assist people with hearing impairment. In the area of workplace discrimination this study reported no relationship between the age of the complainant, their title or position in the organisation, the highest level of education attained or the level of deafness experienced and the reporting of discrimination. Respondents who had experienced and reported discrimination said that in three quarters of…
Advisors/Committee Members: University of Newcastle. Faculty of Education & Arts, School of Education.
Subjects/Keywords: workplace; hearing impairment; employees; hearing loss; adjustments
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nealon, M. J. (2018). Workplace experiences of employees with hearing impairment. (Masters Thesis). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1389602
Chicago Manual of Style (16th Edition):
Nealon, Michele Jan. “Workplace experiences of employees with hearing impairment.” 2018. Masters Thesis, University of Newcastle. Accessed March 07, 2021.
http://hdl.handle.net/1959.13/1389602.
MLA Handbook (7th Edition):
Nealon, Michele Jan. “Workplace experiences of employees with hearing impairment.” 2018. Web. 07 Mar 2021.
Vancouver:
Nealon MJ. Workplace experiences of employees with hearing impairment. [Internet] [Masters thesis]. University of Newcastle; 2018. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1959.13/1389602.
Council of Science Editors:
Nealon MJ. Workplace experiences of employees with hearing impairment. [Masters Thesis]. University of Newcastle; 2018. Available from: http://hdl.handle.net/1959.13/1389602
5.
Pierce, Marsha Louise.
Inner Ear Hair Cell Loss and Stereocilia Defects in miR-183 Family Knockout Models.
Degree: PhD, Biomedical Sciences (graduate program), 2015, Creighton University
URL: http://hdl.handle.net/10504/69027
► Hearing loss is the most prevalent sensory defect, and although hearing aids and cochlear implants can provide sensory input, no current therapeutic options exist for…
(more)
▼ Hearing loss is the most prevalent sensory defect, and although
hearing aids and cochlear implants can provide sensory input, no current therapeutic options exist for restoration of normal
hearing. The microRNA-183 family (miR-183, miR-96, and miR-182) is highly conserved and coordinately expressed in neurosensory cells including hair cells (HCs) and sensory neurons in the inner ear, and mutations in miR-96 cause deafness in both mice and humans. To specifically investigate the effects of miR-183 family member
loss-of-function, miR-183/96 and miR-182 knockout (KO) mice were assessed. Behavioral observations and evaluation of Preyer’s reflex were used to grossly assess hair cell function. Stereocilia defects and hair cell
loss in mice ranging from birth (postnatal day zero; P0) to P180 were examined by immunofluorescence microscopy (IFM) detection of MyoVIIa, scanning electron microscopy (SEM), and phase contrast microscopy (PCM) of plastic embedded sections through the organ of Corti. Spiral ganglion innervation was evaluated by IFM detection for acetylated tubulin. Targetscan predicted target genes were compared to neonatal and adult hair cell transcriptomes, genes known to cause hereditary
hearing loss, and miR-183 familly confirmed target genes in the literature to identify a relevant subset of genes for further evaluation. Here we show that miR-183/96 KO caused delayed stereocilia development, gross stereocilia disorganization, hair cell
loss, innervation defects and deafness. Moreover, miR-183/96 heterozygous (HET) and miR-182 KO mice showed relatively subtle stereocilia defects and age-related
loss of acoustic startle response. Arhgdia, Sox2 and Tes were co-expressed with miR-183 family members and mildly upregulated in miR-183/96 KO mice, suggesting such targets might play a role in the observed phenotype. Results demonstrate that miR-183 family
loss-of-function (LOF) led to stereocilia defects, hair cell
loss, and contributing to
hearing deficits. The challenge remains to conclusively identify miR-183 family effects on target genes and pathways that support hair cell maintenance and function to provide insight to approaches for preventing hair cell
loss.
Advisors/Committee Members: Soukup, Garrett A. (advisor), Pierce, Marsha Louise (cuauthor).
Subjects/Keywords: Hearing Loss; MicroRNAs; Mice, Knockout
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pierce, M. L. (2015). Inner Ear Hair Cell Loss and Stereocilia Defects in miR-183 Family Knockout Models. (Doctoral Dissertation). Creighton University. Retrieved from http://hdl.handle.net/10504/69027
Chicago Manual of Style (16th Edition):
Pierce, Marsha Louise. “Inner Ear Hair Cell Loss and Stereocilia Defects in miR-183 Family Knockout Models.” 2015. Doctoral Dissertation, Creighton University. Accessed March 07, 2021.
http://hdl.handle.net/10504/69027.
MLA Handbook (7th Edition):
Pierce, Marsha Louise. “Inner Ear Hair Cell Loss and Stereocilia Defects in miR-183 Family Knockout Models.” 2015. Web. 07 Mar 2021.
Vancouver:
Pierce ML. Inner Ear Hair Cell Loss and Stereocilia Defects in miR-183 Family Knockout Models. [Internet] [Doctoral dissertation]. Creighton University; 2015. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10504/69027.
Council of Science Editors:
Pierce ML. Inner Ear Hair Cell Loss and Stereocilia Defects in miR-183 Family Knockout Models. [Doctoral Dissertation]. Creighton University; 2015. Available from: http://hdl.handle.net/10504/69027
6.
Pandya, Isha.
Small RNA Sequencing Analysis of Inner Ear from Conditional Knockout Mice with Hair Cell-Specific Dgcr8 or Dicer1 Deletion.
Degree: PhD, Biomedical Sciences (graduate program), 2016, Creighton University
URL: http://hdl.handle.net/10504/74482
► Damage to mechanosensory hair cells (HCs) of the inner ear leads to permanent hearing loss. Small RNAs, namely endogenous small interfering RNAs (endo-siRNAs) and canonical…
(more)
▼ Damage to mechanosensory hair cells (HCs) of the inner ear leads to permanent
hearing loss. Small RNAs, namely endogenous small interfering RNAs (endo-siRNAs) and canonical microRNAs, are known to affect HC development and maintenance. microRNA biogenesis requires both Dgcr8 and Dicer1, whereas siRNA biogenesis requires only Dicer1. Conditional knockout (CKO) of Dgcr8 shows HC aberrations and mild HC
loss at 2 weeks of age, whereas Dicer1 CKO exhibits less HC aberrations or
loss at 2 weeks of age. Thus we hypothesize there is a greater depletion of miRNAs in the inner ear of mice with HC-specific Dgcr8 CKO compared to mice with HC-specific Dicer1 CKO. |HC-specific Dgcr8 CKO and Dicer1 CKO mice were generated using Atoh1-Cre. Total RNA was isolated from the inner ears of 2 biological replicates from Dgcr8 CKO, Dicer1 CKO, and control mice. Small RNA content was examined by Illumina small RNA sequencing. Small RNA content was compared between CKO and control inner ear samples. Further examination of normalized read values included determination of microRNAs and potential endo-siRNAs that exhibited at least 2-fold differences in abundance between CKO and control inner ears, a comparison of microRNA content to previously published studies, miRNA cluster analysis, an evaluation of microRNA/host gene co-transcription, validation of a subset of miRNAs by qRT-PCR, and visualization of change between control and CKO cochlea for a selected few microRNAs by in situ hybridization (ISH). |For Dgcr8 CKO inner ear versus control, there was 1 downregulated and no upregulated microRNAs with a ≥ 2-fold statistically significant change in expression. In contrast Dicer1 CKO inner ear showed 25 downregulated and 11 upregulated microRNAs. Notably, microRNA-96, a known HC-specific microRNA, was significantly downregulated in both CKO groups. Potential endo-siRNAs showed relatively low abundance compared to microRNAs and were unchanged in Dgcr8 CKO inner ear, whereas there were 19 downregulated and 20 upregulated potential endo-siRNAs in Dicer1 CKO inner ear. Further assessments of small RNA sequencing data largely validated the subset of microRNAs that were highly abundant within the inner ear. The fold change identified by qRT-PCR, for a subset of miRNAs, was not statistically significant. ISH revealed a depletion in HC and SE-specific miRNA in both CKO mice compared to control. |Our analyses suggest that Dgcr8 may not only affect miRNAs but may also affect other classes of RNAs, such as mRNAs, compared to Dicer1. Ambiguous quantitative and qualitative results do now allow for defining the contribution of miRNAs on the more affected HC phenotype observed in Dgcr8 CKO mice compared to Dicer1 CKO mice. Investigation of both CKO mice utilizing cell specific dissection followed by small RNA sequencing may provide further insight towards the contribution of miRNAs to the HC phenotype observed.
Advisors/Committee Members: Soukup, Garrett A. (advisor), Pandya, Isha (cuauthor).
Subjects/Keywords: RNA, Small Interfering; Hearing Loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pandya, I. (2016). Small RNA Sequencing Analysis of Inner Ear from Conditional Knockout Mice with Hair Cell-Specific Dgcr8 or Dicer1 Deletion. (Doctoral Dissertation). Creighton University. Retrieved from http://hdl.handle.net/10504/74482
Chicago Manual of Style (16th Edition):
Pandya, Isha. “Small RNA Sequencing Analysis of Inner Ear from Conditional Knockout Mice with Hair Cell-Specific Dgcr8 or Dicer1 Deletion.” 2016. Doctoral Dissertation, Creighton University. Accessed March 07, 2021.
http://hdl.handle.net/10504/74482.
MLA Handbook (7th Edition):
Pandya, Isha. “Small RNA Sequencing Analysis of Inner Ear from Conditional Knockout Mice with Hair Cell-Specific Dgcr8 or Dicer1 Deletion.” 2016. Web. 07 Mar 2021.
Vancouver:
Pandya I. Small RNA Sequencing Analysis of Inner Ear from Conditional Knockout Mice with Hair Cell-Specific Dgcr8 or Dicer1 Deletion. [Internet] [Doctoral dissertation]. Creighton University; 2016. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10504/74482.
Council of Science Editors:
Pandya I. Small RNA Sequencing Analysis of Inner Ear from Conditional Knockout Mice with Hair Cell-Specific Dgcr8 or Dicer1 Deletion. [Doctoral Dissertation]. Creighton University; 2016. Available from: http://hdl.handle.net/10504/74482

University of Arizona
7.
Davidson, Alyssa.
Investigating the Role of Auditory Processing Abilities in Hearing Aid Outcomes Among Older Adults
.
Degree: 2020, University of Arizona
URL: http://hdl.handle.net/10150/641400
► Background: Hearing aid outcomes are highly variable and important to improve. The overall objective of this dissertation is to determine how auditory processing assessments of…
(more)
▼ Background:
Hearing aid outcomes are highly variable and important to improve. The overall objective of this dissertation is to determine how auditory processing assessments of temporal, spatial, and binaural processing are related to
hearing aid outcomes in older adults. The long-term goal is to establish the evidence base supporting auditory processing evaluation as an expanded part of rehabilitative management to help target appropriate treatment and counsel on realistic expectations with recommendations not solely based on audibility alone. Methods: In this dissertation, three studies were undertaken. First, a systematic review, then clinical research in a patient population, finally a more detailed evaluation and comparison of speech-in-noise testing. In the first study, a systematic review was conducted to answer the question: “How do auditory processing abilities affect
hearing aid satisfaction among adults?” Then in the second study, 78 older adults were recruited to take part in multiple evaluations of their auditory processing abilities and their non-auditory self-reports. Multiple linear regression was used to determine the strength of the relation between the different factors and
hearing aid outcomes. In the third study, speech-in-noise results from the QuickSIN, Listening in Spatialized Noise Sentence Test (LISN-S), and a spatial release from masking task using the Coordinate Response Measure (CRM) materials, were evaluated and compared in 61 older adults from the second study. For this study, Pearson’s correlations, multiple linear regressions, and point-biserial correlations were used to evaluate and compare the three speech in noise tests. Results: In study one, seven studies met the inclusion criteria for the systematic review. Of these studies, the Dichotic Digits Test, the Synthetic Sentence Identification Test, and the Performance-Perceptual Test were the only tests of auditory processing ability that were significant contributors to
hearing aid satisfaction. Although these studies were not rated highly for study quality, they do suggest the potential for associations between auditory processing abilities and
hearing aid satisfaction. In study two, temporal processing as measured by the Gaps-in-Noise, spatial processing as measured by the LISN-S, and self-efficacy as measured by the Measure of Audiologic Rehabilitation Self-Efficacy for
Hearing Aids (MARS-HA), were all statistically significant predictors of
hearing aid satisfaction. However, contradictory to prior studies in the literature, binaural processing on the Dichotic Digits Test was not a significant predictor. For
hearing aid benefit, only the MARS-HA and self-report of disability as measured by the Speech, Spatial, and Qualities of
Hearing (SSQ) questionnaire were statistically significant predictors. In study three, Pearson’s Correlations showed that only the LISN-S and QuickSIN and the LISN-S and CRM were significantly correlated to one another. The SSQ score was not correlated with performance on any of the speech-in-noise tests.…
Advisors/Committee Members: Marrone, Nicole (advisor), Musiek, Frank (committeemember), DeRuiter, Mark (committeemember), Griffin, Stephanie (committeemember), Gallun, Frederick (committeemember).
Subjects/Keywords: Amplification;
Auditory Processing;
Hearing Loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Davidson, A. (2020). Investigating the Role of Auditory Processing Abilities in Hearing Aid Outcomes Among Older Adults
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/641400
Chicago Manual of Style (16th Edition):
Davidson, Alyssa. “Investigating the Role of Auditory Processing Abilities in Hearing Aid Outcomes Among Older Adults
.” 2020. Doctoral Dissertation, University of Arizona. Accessed March 07, 2021.
http://hdl.handle.net/10150/641400.
MLA Handbook (7th Edition):
Davidson, Alyssa. “Investigating the Role of Auditory Processing Abilities in Hearing Aid Outcomes Among Older Adults
.” 2020. Web. 07 Mar 2021.
Vancouver:
Davidson A. Investigating the Role of Auditory Processing Abilities in Hearing Aid Outcomes Among Older Adults
. [Internet] [Doctoral dissertation]. University of Arizona; 2020. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10150/641400.
Council of Science Editors:
Davidson A. Investigating the Role of Auditory Processing Abilities in Hearing Aid Outcomes Among Older Adults
. [Doctoral Dissertation]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/641400

University of Cape Town
8.
Banga, Agatha Tafadzwa.
The prevalence of hearing loss in HIV-infected South African adolescents on antiretroviral therapy.
Degree: Image, Centre for Infectious Disease Epidemiology and Research (CIDER), 2017, University of Cape Town
URL: http://hdl.handle.net/11427/27473
► Objective: To investigate hearing loss among perinatally HIV-infected (PHIV+) adolescents on antiretroviral therapy (ART), and HIV-non-infected (HIV-) adolescents in Cape Town, South Africa. Methods: A…
(more)
▼ Objective: To investigate
hearing loss among perinatally HIV-infected (PHIV+) adolescents on antiretroviral therapy (ART), and HIV-non-infected (HIV-) adolescents in Cape Town, South Africa. Methods: A cross-sectional analysis was carried out to describe the prevalence, nature and predictors (demographic, past medical history, clinical findings) of
hearing loss in adolescents between 9 and 14 years of age. Screening pure-tone air-conduction (AC) thresholds above 30 decibels (dB) were considered to be indicative of debilitating
hearing loss. Statistical analysis included univariate analysis and multivariate logistic regression. Results: The cross-sectional analysis included data from 540 participants; consisting 273 males (51%), 267 females, 432 PHIV+ and 108 HIV-, with a median age of 12 years.
Hearing impairment was observed in 19% of all the adolescents in the study. Multivariate analysis showed the following predictors for any
hearing loss: an unmarried primary caregiver (odds ratio (OR) 0.59; 95% confidence interval (CI), 0.39;0.91, p = 0.015), being female (OR 1.67; 95% CI, 1.12;2.51; p = 0.013) and reports of being troubled by ear pain or discharge in the last month (OR 2.54; 95% CI, 1.55;4.17; p = <0.001) after adjustment. Univariate analysis showed an association between
hearing loss and a longer duration on ART among PHIV+ adolescents (OR 1.80, 95%CI 1.17;2.75, p = 0.007). Conclusion: The prevalence of
hearing loss appears to be comparable between PHIV+ and HIVadolescents in Cape Town. In low resource settings, a history of ear pain or discharge within the last month may be used as a screening tool for a
hearing assessment, and guide referral for formal
hearing tests.
Advisors/Committee Members: Myer, Landon (advisor).
Subjects/Keywords: Epidemiology; Hearing Loss; antiretroviral therapy
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Banga, A. T. (2017). The prevalence of hearing loss in HIV-infected South African adolescents on antiretroviral therapy. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/27473
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Banga, Agatha Tafadzwa. “The prevalence of hearing loss in HIV-infected South African adolescents on antiretroviral therapy.” 2017. Thesis, University of Cape Town. Accessed March 07, 2021.
http://hdl.handle.net/11427/27473.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Banga, Agatha Tafadzwa. “The prevalence of hearing loss in HIV-infected South African adolescents on antiretroviral therapy.” 2017. Web. 07 Mar 2021.
Vancouver:
Banga AT. The prevalence of hearing loss in HIV-infected South African adolescents on antiretroviral therapy. [Internet] [Thesis]. University of Cape Town; 2017. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/11427/27473.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Banga AT. The prevalence of hearing loss in HIV-infected South African adolescents on antiretroviral therapy. [Thesis]. University of Cape Town; 2017. Available from: http://hdl.handle.net/11427/27473
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Melbourne
9.
Rousset, Alexandra May.
Outcomes and predictive factors with cochlear implants for adults with a significant, early-onset hearing loss.
Degree: 2017, University of Melbourne
URL: http://hdl.handle.net/11343/194904
► Background and Aims: Adults with an early-onset hearing loss are being referred to cochlear implant clinics more frequently in recent years than was observed during…
(more)
▼ Background and Aims: Adults with an early-onset hearing loss are being referred to cochlear implant clinics more frequently in recent years than was observed during the early years of cochlear implantation. Open set speech perception outcomes for adults with early onset hearing loss and late age at cochlear implant are typically below those measured for adults with an acquired hearing loss, and show wider variability. This variability in outcomes makes it difficult to provide appropriate and realistic counselling regarding potential to benefit in pre-operative sessions. To address this issue, this study investigated cochlear implant outcomes and predictive factors for adults with a significant early-onset hearing loss.
Method: The study design involved a prospective, longitudinal evaluation of outcomes and predictive factors for a study group of 29 adults with a significant, early-onset hearing loss who received cochlear implants at the Royal Victorian Eye and Ear Hospital, Melbourne Australia.
In addition to standard pre-operative clinical assessments, receptive language was assessed using the PPVT, speech intelligibility was rated using the NTID rating scale, and communication modes (reliance on sign or oral communication) were investigated. Temporal processing was assessed via gap detection testing, non-verbal IQ was assessed using the Raven’s Progressive Matrices test (RPM), and cortical auditory evoked potentials (CAEP) were recorded. Post-operatively, speech perception was measured at 3, 12 and 24 months after surgery. At the same assessment points, electrically evoked CAEP were recorded, and correlated with speech perception results.
A study questionnaire was administered post-operatively to determine if a recipient’s satisfaction with their cochlear implant was correlated with performance. Speech perception, gap detection and questionnaire results were compared to a control group of adults with an acquired hearing loss.
Results: The study cohort of 29 adults with significant early-onset hearing loss gained significant benefit from their cochlear implant, as measured by increased speech perception results post-operatively. Results, however, were significantly lower than those obtained from 576 adults with an acquired hearing loss from the Royal Victorian Eye and Ear Hospital.
Receptive language was not correlated with post-operative speech perception, but was correlated with speech intelligibility; participants with greater speech intelligibility achieved better post-operative speech perception results. Those participants who used purely oral language achieved better speech perception and had better speech intelligibility than those who used some signing for communication.
Gap detection was correlated with performance, with those participants with lower gap detection scores achieving better speech perception results. Both cortical evoked responses and non-verbal IQ were not correlated with outcomes.
Adults with an early-onset hearing loss scored significantly lower than adults with an…
Subjects/Keywords: cochlear implant; prelingual hearing loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rousset, A. M. (2017). Outcomes and predictive factors with cochlear implants for adults with a significant, early-onset hearing loss. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/194904
Chicago Manual of Style (16th Edition):
Rousset, Alexandra May. “Outcomes and predictive factors with cochlear implants for adults with a significant, early-onset hearing loss.” 2017. Doctoral Dissertation, University of Melbourne. Accessed March 07, 2021.
http://hdl.handle.net/11343/194904.
MLA Handbook (7th Edition):
Rousset, Alexandra May. “Outcomes and predictive factors with cochlear implants for adults with a significant, early-onset hearing loss.” 2017. Web. 07 Mar 2021.
Vancouver:
Rousset AM. Outcomes and predictive factors with cochlear implants for adults with a significant, early-onset hearing loss. [Internet] [Doctoral dissertation]. University of Melbourne; 2017. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/11343/194904.
Council of Science Editors:
Rousset AM. Outcomes and predictive factors with cochlear implants for adults with a significant, early-onset hearing loss. [Doctoral Dissertation]. University of Melbourne; 2017. Available from: http://hdl.handle.net/11343/194904

University of Arizona
10.
Robbins, Chloe.
Audiologic Rehabilitation Needs of Adults with Hearing Loss
.
Degree: 2018, University of Arizona
URL: http://hdl.handle.net/10150/628024
► The Living Well with Hearing Loss Audiologic Rehabilitation Program for Adults at the University of Arizona has been in existence since 2010. Over 600 adults…
(more)
▼ The Living Well with
Hearing Loss Audiologic Rehabilitation Program for Adults at the University of Arizona has been in existence since 2010. Over 600 adults with
hearing loss and their frequent communication partners have participated in the group audiologic rehabilitation (AR) program at various stages of their journey as a person with
hearing loss. This study aims to identify barriers to participation in group AR for University of Arizona
Hearing Clinic patients through in-person interview. Patients who receive
hearing healthcare services at the UA
Hearing Clinic are classified into one of the following billing groups: Medicare, Vocational Rehabilitation (VR), Self-Pay, EPIC provider group, and Sertoma Arizona
Hearing Aid Bank (HAB). A purposeful oversampling of HAB patients was performed due to an observed low attendance rate for group AR for this population. Audio-recorded interviews were conducted prospectively with a sample of 30
hearing aid patients between May-October 2016. Content analysis methods were used to gain insight into perspectives of those with
hearing loss. Interview response data were coded using the Capability, Opportunity, Motivation and Behavior (COM-B) model (Michie, Atkins, & West, 2014). Results provide insight into current barriers to participation in group AR and specific modifications that may make the program more accessible for adults with
hearing loss and their families in Southern Arizona.
Advisors/Committee Members: Marrone, Nicole (advisor), Velenovsky, David (committeemember), Hartley, Michael (committeemember), Muller, Tom (committeemember).
Subjects/Keywords: group audiologic rehabilitation;
hearing loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Robbins, C. (2018). Audiologic Rehabilitation Needs of Adults with Hearing Loss
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/628024
Chicago Manual of Style (16th Edition):
Robbins, Chloe. “Audiologic Rehabilitation Needs of Adults with Hearing Loss
.” 2018. Doctoral Dissertation, University of Arizona. Accessed March 07, 2021.
http://hdl.handle.net/10150/628024.
MLA Handbook (7th Edition):
Robbins, Chloe. “Audiologic Rehabilitation Needs of Adults with Hearing Loss
.” 2018. Web. 07 Mar 2021.
Vancouver:
Robbins C. Audiologic Rehabilitation Needs of Adults with Hearing Loss
. [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10150/628024.
Council of Science Editors:
Robbins C. Audiologic Rehabilitation Needs of Adults with Hearing Loss
. [Doctoral Dissertation]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/628024

University of Pretoria
11.
Potgieter, Jenni-Marí.
An Auditory
profile of sclerosteosis.
Degree: Speech-Language Pathology and
Audiology, 2013, University of Pretoria
URL: http://hdl.handle.net/2263/33363
► Sclerosteosis is a rare genetic bone dysplasia disorder characterised by generalised craniotubular bone modelling. Alongside many clinical appearances marked in sclerosteosis, the auditory system is…
(more)
▼ Sclerosteosis is a rare genetic bone dysplasia
disorder characterised by generalised
craniotubular bone
modelling. Alongside many clinical appearances marked in
sclerosteosis, the auditory system is considerably compromised on
several levels during
the disease progression. Extensive
otolaryngological research on the history of
sclerosteosis, the
clinical presentation of sclerosteosis, radiographic studies and
the
gene causing the condition had been documented. No studies had
been found describing
the audiological profiles, auditory
functioning and abnormalities for subjects with
sclerosteosis.
Thus the object of this study aimed to describe the auditory
profile of
subjects with sclerosteosis.
A cross-sectional
descriptive research design and quantitative research approach was
followed to investigate the auditory characteristics of subjects
with sclerosteosis.
Subjects were selected from a database of
patients with confirmed diagnoses of
sclerosteosis. Ten subjects
responded and provided written informed consent. Test
procedures
included otoscopy, tympanometry, acoustic reflexes, diagnostic
pure-tone airand
bone-conduction audiometry, speech audiometry,
distortion product otoacoustic
emissions (DPOAE), auditory
brainstem responses (ABR) and computed tomographic
(CT) scans. The
subjects were assessed with a comprehensive audiological
test-battery
within a single test session lasting approximately
two hours. A CT scan was conducted
on a separate occasion shortly
after the audiological data were obtained.
Normal type A
tympanograms were obtained in 50% (n=10/20) of ears. All subjects
presented with mixed
hearing losses varying from moderate (5%;
n=1), severe (55%;
n=11) and profound (40%; n=8) degrees across
ears.
Hearing loss configurations ranged
from rising (15%),
sloping (35%) and air-conduction thresholds peaking at 2000 Hz
(50%). Air bone gaps (ABG) were larger in older subjects, although
not statistically
significant (p>.05). The CT scans indicated
anatomical abnormalities of the external
auditory canal, tympanic
membrane, middle ear space, ossicles, oval window, round
window
and the internal auditory canal. The progressive abnormal bone
formation in sclerosteosis involved the middle ear, the
round and
oval windows of the cochlea and internal auditory canal. The
progressive
abnormal bony overgrowth, which is the hallmark of
sclerosteosis, led to functional
impairment at various levels in
the auditory system. The current findings provided a
comprehensive
auditory profile for sclerosteosis. Results might be utilised
alongside
future research findings to direct criteria and
audiological indications for surgical and
audiological
intervention.
Advisors/Committee Members: Swanepoel, De Wet (advisor), Heinze, Barbara M. (coadvisor).
Subjects/Keywords: Bone
dysplasia; Conductive
hearing loss;
Sclerosteosis;
Sensorineural hearing loss;
UCTD
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Potgieter, J. (2013). An Auditory
profile of sclerosteosis. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/33363
Chicago Manual of Style (16th Edition):
Potgieter, Jenni-Marí. “An Auditory
profile of sclerosteosis.” 2013. Masters Thesis, University of Pretoria. Accessed March 07, 2021.
http://hdl.handle.net/2263/33363.
MLA Handbook (7th Edition):
Potgieter, Jenni-Marí. “An Auditory
profile of sclerosteosis.” 2013. Web. 07 Mar 2021.
Vancouver:
Potgieter J. An Auditory
profile of sclerosteosis. [Internet] [Masters thesis]. University of Pretoria; 2013. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/2263/33363.
Council of Science Editors:
Potgieter J. An Auditory
profile of sclerosteosis. [Masters Thesis]. University of Pretoria; 2013. Available from: http://hdl.handle.net/2263/33363

Universidade Nova
12.
Pereira, Sónia Lopes.
Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations.
Degree: 2013, Universidade Nova
URL: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/10862
► RESUMO: A surdez súbita (SS) caracteriza-se por uma perda abrupta de audição, mais frequentemente unilateral e associada a sensação de preenchimento aural, acufenos e vertigem.…
(more)
▼ RESUMO: A surdez súbita (SS) caracteriza-se por uma perda abrupta de audição, mais frequentemente unilateral e associada a sensação de preenchimento aural, acufenos e vertigem. Afecta 5-20/100.000pessoas/ano (sobretudo adultos em fase activa na década de 40), com grande impacto na qualidade de vida. Possíveis causas incluem doenças infecciosas, circulatórias, traumáticas, imunológicas, neoplásicas, neurológicas, tóxicas e cocleares. No entanto, a causa da SS permanece desconhecida na maioria dos casos (80%), o que origina tratamentos controversos e frequentemente ineficientes. Os tratamentos disponíveis variam desde corticosteróides a antivirais, vasodilatadores, anti-agregantes, anticoagulantes, vitaminas e oxigénio hiperbárico (OHB).
Atendendo a falta de informação relativa à etiologia e fisiopatologia da SS, pretendemos avaliar a evolução clínica dos doentes com SS tratados com OHB no Centro de Medicina Subaquática e Hiperbárica (CMSH) de Lisboa entre 2000 e 2005, durante um período mínimo de 5 anos, na tentativa de identificar eventuais factores de risco ou noxas clínicas com a SS.
O estudo retrospectivo proposto baseia-se na revisão de processos clínicos do CMSH e na aplicação telefónica de questionários médicos de “follow-up” confidenciais – tanto a doentes (grupo de estudo), como aos respectivos esposos/companheiros/membros próximos da família (grupo de controlo) –, com particular ênfase nos antecedentes médicos e história clínica actual.
Um estudo preliminar de 20 pessoas (10 doentes e 10 controlos) foi efectuado para antecipar dificuldades e estimar as necessidades logísticas. As dificuldades identificadas foram: 1) selecção dos doentes com números de telefone válidos e processos clínicos completos (com audiograma inicial e final); 2) contacto telefónico com os participantes de ambos os grupos (de estudo e controlo); 3) recursos humanos requeridos.
Dado que a SS não é uma doença em si, mas um sintoma de uma doença subjacente, acreditamos que este estudo epidemiológico seja importante e útil, capaz de gerar novas luzes sobre a fisiopatologia e mecanismos desta entidade clínica. – – – – -ABSTRACT:Sudden sensorineural hearing loss (SSHL) is characterized by abrupt, mostly unilateral loss of hearing, frequently associated to aural fullness, tinnitus and vertigo. It affects 5-20/100.000 people/year (particularly working adults in the 40ths), with huge impact on quality of life. Possible causes include infectious, circulatory, traumatic, immunologic, metabolic, neoplastic, neurologic, toxic and unidentified cochlear diseases. Nevertheless, SSHL’s etiology remains unknown in most cases (80%), giving rise to controversial (and frequently ineffective) treatments. Available therapies range from corticosteroids to antivirals, vasodilators, antiaggregants, anticoagulants, vitamins and hyperbaric oxygen (HBO).
Given the lack of data concerning SSHL’s etiology and physiopathology, we intend to evaluate clinical evolution of such patients treated with HBO in the Underwater and Hyperbaric Medical Center (UHMC) at Lisbon…
Subjects/Keywords: Hearing Loss, Sudden - diagnosis; Hearing Loss, Sudden - treatment; Otorrinolaringologia
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pereira, S. L. (2013). Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations. (Thesis). Universidade Nova. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/10862
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pereira, Sónia Lopes. “Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations.” 2013. Thesis, Universidade Nova. Accessed March 07, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/10862.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pereira, Sónia Lopes. “Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations.” 2013. Web. 07 Mar 2021.
Vancouver:
Pereira SL. Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations. [Internet] [Thesis]. Universidade Nova; 2013. [cited 2021 Mar 07].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/10862.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pereira SL. Sudden sensorineural hearing loss : evaluation of co-morbidities and potential clinical associations. [Thesis]. Universidade Nova; 2013. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/10862
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ghana
13.
Appea-Korang, E.
Occupational Hearing Loss among Night Club Workers in Accra
.
Degree: 2018, University of Ghana
URL: http://ugspace.ug.edu.gh/handle/123456789/27335
► Background: Employees of night clubs are at a greater risk for developing hearing loss because they could be exposed to dangerously high noise levels. Elevated…
(more)
▼ Background: Employees of night clubs are at a greater risk for developing hearing loss because they could be exposed to dangerously high noise levels. Elevated noise levels may lead to adverse effects including elevated blood pressure and sleep interference. Communication in the workplace may also be affected, contributing to the occurrence of accidents. The most serious side effect of noise however is irreversible hearing impairment, and this occurs as a result of damage to the delicate hearing mechanism of the ear.
Aims: The aim of this study was to determine the level of noise that nightclub workers are exposed to and the prevalence of noise induced hearing loss among them.
Methods: Fifty nightclub workers with at least one year continuous working experience, were sampled from five nightclubs in Accra. A structured questionnaire was administered to obtain socio-demographic data, workers’ knowledge about the signs and effects of occupational noise exposure, as well as hearing protection devices and their use. Data collection methods employed for the study included noise level measurements, otoscopy and pure tone audiometry. Data was analyzed using the SSPS, Microsoft Excel and R data analysis software.
Results: Average noise levels in all the three clubs was 89.6 dBA. Only 8 (16%) of the respondents knew about hearing protection devices, but none of the fifty used hearing protection during a shift. There was significant association between the duration of employment and the degree of hearing loss at 4 kHz in both left and right ears. Comparison of thresholds at 2 kHz, 3 kHz and 4 kHz showed normal hearing in the frequencies of 2 and 3 kHz (in both ears), with elevated thresholds in the 4 kHz frequency, indicating mild hearing loss.
Conclusion: This suggests a significant association between the duration of exposure and the degree of hearing loss, and that nightclub workers were at risk of developing noise-induced hearing loss.
Subjects/Keywords: Hearing Loss;
Night Club Workers;
sensorineural hearing loss;
Accra
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Appea-Korang, E. (2018). Occupational Hearing Loss among Night Club Workers in Accra
. (Masters Thesis). University of Ghana. Retrieved from http://ugspace.ug.edu.gh/handle/123456789/27335
Chicago Manual of Style (16th Edition):
Appea-Korang, E. “Occupational Hearing Loss among Night Club Workers in Accra
.” 2018. Masters Thesis, University of Ghana. Accessed March 07, 2021.
http://ugspace.ug.edu.gh/handle/123456789/27335.
MLA Handbook (7th Edition):
Appea-Korang, E. “Occupational Hearing Loss among Night Club Workers in Accra
.” 2018. Web. 07 Mar 2021.
Vancouver:
Appea-Korang E. Occupational Hearing Loss among Night Club Workers in Accra
. [Internet] [Masters thesis]. University of Ghana; 2018. [cited 2021 Mar 07].
Available from: http://ugspace.ug.edu.gh/handle/123456789/27335.
Council of Science Editors:
Appea-Korang E. Occupational Hearing Loss among Night Club Workers in Accra
. [Masters Thesis]. University of Ghana; 2018. Available from: http://ugspace.ug.edu.gh/handle/123456789/27335

University of Cape Town
14.
Cohen, Romy.
Influential factors in driving confidence among hearing-impaired older adults in Cape Town.
Degree: MSc, Health and Rehabilitation Sciences, 2020, University of Cape Town
URL: http://hdl.handle.net/11427/32182
► Research has shown that age-related hearing loss may have profound implications on all aspects of an individual's life, including cognitive abilities. The relationship between hearing…
(more)
▼ Research has shown that age-related
hearing loss may have profound implications on all aspects of an individual's life, including cognitive abilities. The relationship between
hearing loss and cognition has led to research which indicates an association between objective
hearing loss and reduced driving performance in older adults. However, little research exists on the relationship between self-perceived
hearing loss and driving confidence, particularly in the South African context. The current study aimed to identify possible associations between driving confidence and
hearing loss, age, sex and driving safety among older adults. Data analysis indicated a significant increase in driving confidence after one month of first-time
hearing aid use. An insignificant or weak relationship was found between self-perceived
hearing loss and level of driving confidence. Age, sex and a combination of both were significantly associated with level of driving confidence. No association was found between pure-tone average and level of driving confidence or between pure-tone average and driving safety. Further research in this area could assist in advising legislation relating to licensing and road safety campaigns targeted at older adults, as well as expanding audiologists' duty of care to include counselling on the potential positive effects of
hearing aid use on driving confidence.
Advisors/Committee Members: Rogers, Christine (advisor), Chouhan Jay (advisor).
Subjects/Keywords: hearing loss; audiology; older adults; hearing loss; driving confidence
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cohen, R. (2020). Influential factors in driving confidence among hearing-impaired older adults in Cape Town. (Masters Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/32182
Chicago Manual of Style (16th Edition):
Cohen, Romy. “Influential factors in driving confidence among hearing-impaired older adults in Cape Town.” 2020. Masters Thesis, University of Cape Town. Accessed March 07, 2021.
http://hdl.handle.net/11427/32182.
MLA Handbook (7th Edition):
Cohen, Romy. “Influential factors in driving confidence among hearing-impaired older adults in Cape Town.” 2020. Web. 07 Mar 2021.
Vancouver:
Cohen R. Influential factors in driving confidence among hearing-impaired older adults in Cape Town. [Internet] [Masters thesis]. University of Cape Town; 2020. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/11427/32182.
Council of Science Editors:
Cohen R. Influential factors in driving confidence among hearing-impaired older adults in Cape Town. [Masters Thesis]. University of Cape Town; 2020. Available from: http://hdl.handle.net/11427/32182

Harvard University
15.
Musser, Anna.
Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?.
Degree: ALM, 2019, Harvard University
URL: http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725
► Can listening to information at a low volume improve hearing? To test this hypothesis this experiment had undergraduate students listen to a podcast at a…
(more)
▼ Can listening to information at a low volume improve hearing? To test this hypothesis this experiment had undergraduate students listen to a podcast at a low volume. In addition, this study also explored expectation or priming someone to anticipate a particular outcome. The central questions of this study asked how both listening to a podcast at a low volume and expectation influenced hearing outcomes, reaction times, the comprehension of auditory information and perceived mindfulness. A secondary line of inquiry examined whether one’s perceived mindfulness is correlated with reaction times. To this end, 111 Harvard undergraduate students with no history of hearing impairment were recruited into a 2 x 2 factorial designed study, where podcast volume and expectation were the factors at play. All participants completed a Langer Mindfulness Scale and a hearing test before being placed into one of four conditions: condition 1, participants listened to a podcast at a regular volume and were told they could expect their hearing to improve, condition 2, participants listened to a podcast at a regular volume, condition 3, participants listened to a podcast at a low volume and were told that they could expect their hearing to improve, and condition 4, participants listened to a podcast at a low volume. Participants then completed a second Langer Mindfulness Scale and hearing test, as well as a visual reaction time test, an auditory reaction time test and a quiz designed to test participants’ comprehension of the podcast material.
This study found that found that that participants that listened to podcasts at a low volume would experience improvements in their posttest hearing test scores. Additionally, being within an expectation group was significantly associated with better scores on hearing tests. It should be noted that this study presupposed that listening to podcasts at a lower volume level will allow participants to mindfully notice change. Due to the fact that other mindfulness interventions have produced positive changes in auditory processing (Langer, 2009) this study’s results may give further credence to the notion that engaging in mindfulness can positively impact sensory processing. In light of these results it may be prudent to explore whether listening to information at a low volume can improve the hearing of those who live with mild to moderate hearing impairment.
Conversely, based on the analysis of this thesis the podcast volume and expectation were not significantly correlated with reaction times or perceived mindfulness. Similarly, perceived mindfulness was not significantly correlated with reaction times. Lastly, the comprehension assessment used to evaluate the comprehension of podcast material proved to be too easy. As a result, a ceiling effect was observed and thus whether listening to podcasts at a low volume impacts comprehension remains unknown.
Psychology
Advisors/Committee Members: Langer, Ellen (committee member), Spetter, Dante (committee member).
Subjects/Keywords: Mindfulness; Disfluency; Hearing; Hearing Loss; Hearing Impairment; Sensory Processing
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APA (6th Edition):
Musser, A. (2019). Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?. (Masters Thesis). Harvard University. Retrieved from http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725
Chicago Manual of Style (16th Edition):
Musser, Anna. “Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?.” 2019. Masters Thesis, Harvard University. Accessed March 07, 2021.
http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725.
MLA Handbook (7th Edition):
Musser, Anna. “Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?.” 2019. Web. 07 Mar 2021.
Vancouver:
Musser A. Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?. [Internet] [Masters thesis]. Harvard University; 2019. [cited 2021 Mar 07].
Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725.
Council of Science Editors:
Musser A. Making Things Easier by Making Them Harder: Can Listening at a Low Volume Improve Hearing?. [Masters Thesis]. Harvard University; 2019. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:42006725
16.
Daney, Samantha.
Improving Outcomes for Children At-Risk for Hearing
Loss.
Degree: MA, Speech Language Pathology, 2016, University of Toledo
URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470233353
► Hearing loss is the most common sensory deficit, and constitutes a public health concern globally (World Health Organization [WHO], 2013a). These two small-scale studies examine…
(more)
▼ Hearing loss is the most common sensory deficit, and
constitutes a public health concern globally (World Health
Organization [WHO], 2013a). These two small-scale studies examine
hearing loss prevention and intervention for children living in an
orphanage in a developing nation and fourth grade students
attending an elementary school in the United States. The growing
prevalence of noise induced
hearing loss (NIHL) among children is
an increasingly serious and growing concern in public health due to
the negative impact of untreated
hearing loss on communication,
social interaction, education and quality of life (ASHA, 2015b).
The purpose of this thesis is to share data, explore
hearing loss
identification and prevention and suggest ways in which
professionals can raise awareness and develop programming to
support children around the world and reduce NIHL. The development
and implementation of
hearing conservation programs, the necessity
of advocating for policy change, and improved collaboration among
professionals is addressed.
Advisors/Committee Members: Pakulski, Lori (Committee Chair).
Subjects/Keywords: Audiology; Speech Therapy; Health; Health Care; Health Education; noise induced hearing loss; hearing loss; hearing loss prevention; global hearing loss; childhood hearing loss
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Daney, S. (2016). Improving Outcomes for Children At-Risk for Hearing
Loss. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470233353
Chicago Manual of Style (16th Edition):
Daney, Samantha. “Improving Outcomes for Children At-Risk for Hearing
Loss.” 2016. Masters Thesis, University of Toledo. Accessed March 07, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470233353.
MLA Handbook (7th Edition):
Daney, Samantha. “Improving Outcomes for Children At-Risk for Hearing
Loss.” 2016. Web. 07 Mar 2021.
Vancouver:
Daney S. Improving Outcomes for Children At-Risk for Hearing
Loss. [Internet] [Masters thesis]. University of Toledo; 2016. [cited 2021 Mar 07].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470233353.
Council of Science Editors:
Daney S. Improving Outcomes for Children At-Risk for Hearing
Loss. [Masters Thesis]. University of Toledo; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470233353

University of Melbourne
17.
McGinnity, Siobhan Anne.
Preventing hearing injury in the music industry.
Degree: 2019, University of Melbourne
URL: http://hdl.handle.net/11343/228863
► Sound levels in the live music industry have been demonstrated to reach levels capable of causing harm to the auditory system. The body of work…
(more)
▼ Sound levels in the live music industry have been demonstrated to reach levels capable of causing harm to the auditory system. The body of work presented here aimed to explore ways in which hearing injury can be prevented in the Australian music industry. To do so, multiple stakeholders were engaged, including venue owners, live-music sound engineers, audiologists and manufacturers of hearing protectors for musicians. Four discrete, mixed-methodology studies were conducted to address the topic.
Study 1 aimed to investigate the clinical provision of musicians’ hearing protectors (MHPs) by audiologists and manufacturers of MHPs in Australia.
Method. Audiologists and manufacturers were asked to complete one of two surveys, investigating the delivery of clinical care for musicians, and recommended processes relating to the manufacture of earplugs.
Results. Inconsistencies in the clinical procedures were noted in both the practice of audiological care for musicians, and the recommendations made by manufacturers of MHPs.
Study 2 aimed to investigate whether the use of, and satisfaction with, MHPs is influenced by the specific treatment delivered to musicians by audiologists.
Method. Musicians rated their satisfaction with the services as delivered across the four treatment conditions.
Results. No statistically significant differences across conditions were observed, however, certain aspects of care were perceived positively by musicians, such as the provision of a hearing test.
Study 3 aimed to assess the hearing of live music sound engineers and their risk of hearing injury.
Method. Participants completed a questionnaire on their hearing health as well as a hearing assessment.
Results. Ninety-six percent of sound engineers reported having experienced at least one symptom of hearing injury during or after a work shift in music. Use of hearing protection was low, however, individuals who frequently wore hearing protection had significantly better hearing, particularly in the extended high frequencies.
Study 4 aimed to investigate if the use of sound level management software can assist in reducing exposure levels in indoor live music venues.
Method. Use of a commercial sound level management system in six indoor live-music venues of Melbourne was trialled.
Results. Overall, there was no reduction in mean sound level (LAeq,T), however the number of nights on which extreme volume levels were recorded was reduced. Subjective questionnaires indicated that one-fifth of patrons would prefer lower sound levels than experienced.
Overall, the results indicate there is a significant risk of hearing injury to individuals working within and attending live music venues in Australia. Findings indicated that there is a need for greater hearing awareness across all stakeholders. Audiologists would benefit from the development of best-practice guidelines for the care of musicians’ ears, while more broadly, the inclusion of EHF hearing thresholds would benefit in early detection and…
Subjects/Keywords: music; music induced hearing injury; hearing conservation; noise; noise induced hearing loss; hearing protection; audiology
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
McGinnity, S. A. (2019). Preventing hearing injury in the music industry. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/228863
Chicago Manual of Style (16th Edition):
McGinnity, Siobhan Anne. “Preventing hearing injury in the music industry.” 2019. Doctoral Dissertation, University of Melbourne. Accessed March 07, 2021.
http://hdl.handle.net/11343/228863.
MLA Handbook (7th Edition):
McGinnity, Siobhan Anne. “Preventing hearing injury in the music industry.” 2019. Web. 07 Mar 2021.
Vancouver:
McGinnity SA. Preventing hearing injury in the music industry. [Internet] [Doctoral dissertation]. University of Melbourne; 2019. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/11343/228863.
Council of Science Editors:
McGinnity SA. Preventing hearing injury in the music industry. [Doctoral Dissertation]. University of Melbourne; 2019. Available from: http://hdl.handle.net/11343/228863

University of Canterbury
18.
Kengmana, Caitlin.
Hearing aid satisfaction among adults with hearing impairment in New Zealand.
Degree: Master of Audiology, Audiology, 2015, University of Canterbury
URL: http://dx.doi.org/10.26021/5800
► Introduction: This study investigated hearing aid (HA) satisfaction among adult with hearing impairment (HI) in New Zealand. This study aimed to answer three questions: 1)…
(more)
▼ Introduction: This study investigated hearing aid (HA) satisfaction among adult with hearing impairment (HI) in New Zealand. This study aimed to answer three questions: 1) What are the current HA satisfaction levels amongst adult HA users in New Zealand? 2) How do the satisfaction findings of this study compare with other HA satisfaction data? 3) What client factors are related to HA satisfaction?
Method: Participants were recruited prospectively. They completed a questionnaire prior to HA fitting and a questionnaire three months post-fitting. Information was collected on: age, gender, HA experience, HI severity, hearing ability, change in hearing ability, hearing handicap, communication self-efficacy, change in communication self-efficacy, HA self-efficacy, HA usage, and number of appointments. HA satisfaction was measured via the Satisfaction with Amplification in Daily Life questionnaire (SADL; Cox & Alexander, 1999).
Results: Data were collected for 47 participants. Of these, 91.5% fell within or above the normative range for global satisfaction established by Cox & Alexander (1999). The mean SADL scores were predominantly high compared to previous research. Satisfaction with negative features of HAs was especially high in this study. However satisfaction with the service and cost of HAs was low compared to other research. SADL scores were found to significantly relate to age, gender, change in hearing ability, hearing handicap, communication self-efficacy, change in communication self-efficacy, and HA self-efficacy.
Conclusions: Results differed from previous research indicating that HA satisfaction may differ over time and across countries. Assessing HA satisfaction in a comprehensive standardised way, as opposed to with a single-item measure, can help identify important related factors. Targeting identified variables such as communication and HA self-efficacy may lead to improved treatment efficacy.
Subjects/Keywords: audiology; hearing aids; hearing aid satisfaction; New Zealand; hearing impairment; hearing loss; self-efficacy; SADL
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kengmana, C. (2015). Hearing aid satisfaction among adults with hearing impairment in New Zealand. (Masters Thesis). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/5800
Chicago Manual of Style (16th Edition):
Kengmana, Caitlin. “Hearing aid satisfaction among adults with hearing impairment in New Zealand.” 2015. Masters Thesis, University of Canterbury. Accessed March 07, 2021.
http://dx.doi.org/10.26021/5800.
MLA Handbook (7th Edition):
Kengmana, Caitlin. “Hearing aid satisfaction among adults with hearing impairment in New Zealand.” 2015. Web. 07 Mar 2021.
Vancouver:
Kengmana C. Hearing aid satisfaction among adults with hearing impairment in New Zealand. [Internet] [Masters thesis]. University of Canterbury; 2015. [cited 2021 Mar 07].
Available from: http://dx.doi.org/10.26021/5800.
Council of Science Editors:
Kengmana C. Hearing aid satisfaction among adults with hearing impairment in New Zealand. [Masters Thesis]. University of Canterbury; 2015. Available from: http://dx.doi.org/10.26021/5800

University of Canterbury
19.
Parry, Dianne Charlene.
Relationship between Cognitive Anxiety Level and Client Variables at First Consultation for Adults with Hearing Impairment.
Degree: Master of Audiology, Audiology, 2013, University of Canterbury
URL: http://dx.doi.org/10.26021/7063
► Hearing impairment (HI) is a growing health issue in today’s ageing society. Research has suggested that individuals with HI may experience increased levels of anxiety.…
(more)
▼ Hearing impairment (HI) is a growing health issue in today’s ageing society. Research has suggested that individuals with HI may experience increased levels of anxiety. Previous research has mainly focused on anxiety as a trait; recent research, however, has looked at state anxiety in the hearing impaired population. Cognitive anxiety is a state anxiety that occurs when people encounter a situation which does not lie within their construct system. As a result, they may experience anxiety as they are unable, or only partially able, to interpret the event meaningfully and are therefore unable to judge the implications of this event. The following study aimed to use the Cognitive Anxiety Scale to investigate relationships between cognitive anxiety and client variables in hearing impaired individuals, adding to the small amount of research currently available in this area. The following research questions were investigated: (1) Is there a relationship between cognitive anxiety level and (a) age, (b) gender, (c) audiometric variables, and (d) quality of life? (2) Is there a significant difference between the level of cognitive anxiety for the participants who purchased and kept hearing aids and those who did not? Twenty-five hearing impaired individuals who were consulting an audiologist for the first time participated in this study, with the cognitive anxiety interview conducted prior to the audiological assessment. The results indicated that cognitive anxiety was significantly related to an ability to understand speech in noise and quality of life, and that hearing aid adopters exhibited greater levels of cognitive anxiety than non-adopters. These results confirm that cognitive anxiety is indeed experienced by adults with HI, and suggest that it may be a factor which motivates people to adopt hearing aids. Further research is needed to confirm and further investigate the relationships with client variables. By listening for signs of cognitive anxiety, an audiologist may be able to gauge if a client is ready for rehabilitation, and encourage the process by exploring the effects of HI on communication situations, employing speech in noise testing, and including the significant other in the process.
Subjects/Keywords: Cognitive anxiety; hearing impairment; hearing loss; hearing aid adoption; quality of life; Hearing Handicap Inventory
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Parry, D. C. (2013). Relationship between Cognitive Anxiety Level and Client Variables at First Consultation for Adults with Hearing Impairment. (Masters Thesis). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7063
Chicago Manual of Style (16th Edition):
Parry, Dianne Charlene. “Relationship between Cognitive Anxiety Level and Client Variables at First Consultation for Adults with Hearing Impairment.” 2013. Masters Thesis, University of Canterbury. Accessed March 07, 2021.
http://dx.doi.org/10.26021/7063.
MLA Handbook (7th Edition):
Parry, Dianne Charlene. “Relationship between Cognitive Anxiety Level and Client Variables at First Consultation for Adults with Hearing Impairment.” 2013. Web. 07 Mar 2021.
Vancouver:
Parry DC. Relationship between Cognitive Anxiety Level and Client Variables at First Consultation for Adults with Hearing Impairment. [Internet] [Masters thesis]. University of Canterbury; 2013. [cited 2021 Mar 07].
Available from: http://dx.doi.org/10.26021/7063.
Council of Science Editors:
Parry DC. Relationship between Cognitive Anxiety Level and Client Variables at First Consultation for Adults with Hearing Impairment. [Masters Thesis]. University of Canterbury; 2013. Available from: http://dx.doi.org/10.26021/7063

Massey University
20.
Sivaraj, Sargunamoorthy.
Hearing in various age groups of orchestral musicians and progression of hearing loss with increased number of years of music exposure.
Degree: PhD, 2011, Massey University
URL: http://hdl.handle.net/10179/3681
► In Orchestra musicians hearing plays a very important role, and slight alterations in their hearing will have a significant impact on their performance ability as…
(more)
▼ In Orchestra musicians hearing plays a very important role, and slight alterations in their hearing will have a significant impact on their performance ability as musicians. Although the effect of orchestra music on hearing is documented, existing researches have several drawbacks, and in most studies measurement of musical sound exposure is not linked to audiological test results. Some variables that may have a significant influence on resulting hearing loss are not taken into consideration. The literature review shows a confusing picture, and some studies identify high-frequency notches suggestive of noise induced threshold shift while others suggest musicians’ hearing levels are not significantly different from a non-exposed population. There are strict legal requirements for the daily noise exposure a worker can receive in workplace but nothing to regulate non-occupational noise and music exposure.
This research work sets out to study the effects of playing in an orchestra on various age groups of musicians, to identify important variables that may potentially contribute to resulting hearing loss, and how playing in an orchestra or a band affects children in particular. In this study 37 out of 61 adult musicians (61%), 19 out of 85 youth musicians (22%) and six out of 37 children musicians (16%) were found to have a hearing loss. The sound exposure measurements confirm that there is an increased risk for hearing loss of all ages and the majority of musicians are also exposed to high impulse noise with the peak level of above 140dB. There is a broad individual difference in sensitivity and vulnerability. It is often difficult to estimate total sound exposure for every musician. Individual susceptibility seems to depend on known and unknown factors and interaction between intrinsic and extrinsic factors. Personal ear protection devices are seldom used among the musicians. Hence this study stresses the importance of an individualised hearing conservation programme that includes identifying all potential variables/factors that may increase the risk.
This thesis addresses the development of hearing loss in orchestra musicians, audio logical findings among players of different musical instruments, and methods of effective hearing conservation programmes for preventing hearing loss in musicians.
Subjects/Keywords: Orchestral musicians;
Music and hearing;
Long-term music exposure;
Effect of music on hearing;
Hearing loss;
Hearing loss prevention
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sivaraj, S. (2011). Hearing in various age groups of orchestral musicians and progression of hearing loss with increased number of years of music exposure. (Doctoral Dissertation). Massey University. Retrieved from http://hdl.handle.net/10179/3681
Chicago Manual of Style (16th Edition):
Sivaraj, Sargunamoorthy. “Hearing in various age groups of orchestral musicians and progression of hearing loss with increased number of years of music exposure.” 2011. Doctoral Dissertation, Massey University. Accessed March 07, 2021.
http://hdl.handle.net/10179/3681.
MLA Handbook (7th Edition):
Sivaraj, Sargunamoorthy. “Hearing in various age groups of orchestral musicians and progression of hearing loss with increased number of years of music exposure.” 2011. Web. 07 Mar 2021.
Vancouver:
Sivaraj S. Hearing in various age groups of orchestral musicians and progression of hearing loss with increased number of years of music exposure. [Internet] [Doctoral dissertation]. Massey University; 2011. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10179/3681.
Council of Science Editors:
Sivaraj S. Hearing in various age groups of orchestral musicians and progression of hearing loss with increased number of years of music exposure. [Doctoral Dissertation]. Massey University; 2011. Available from: http://hdl.handle.net/10179/3681

University of Pretoria
21.
[No author].
Noise-induced hearing loss : prevalence, degree and
impairment criteria in South African gold miners
.
Degree: 2013, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-01152013-130215/
► Despite the preventability of noise-induced hearing loss (NIHL) a high prevalence is still reported in South African mines. The study aimed to describe the hearing…
(more)
▼ Despite the preventability of noise-induced
hearing
loss (NIHL) a high prevalence is still reported in South African
mines. The study aimed to describe the
hearing of gold miners
pertaining to the prevalence and degree of NIHL and effectiveness
of current RSA impairment criteria to identify NIHL. The
audiological data, collected between 2001 and 2008, of 57 714 mine
workers were investigated in this retrospective cohort study. Data
was accessed through the mine’s electronic database and exported to
Microsoft Excel 2007 worksheets. Participants were categorised in
terms of noise exposure (level and working years), age, race and
gender. Noise exposure levels were described in terms of a specific
occupation and categorized into four groups based on dosimeter data
received from the mine’s noise hygienist, namely: 1) Below surface
(underground) noise exposure, ≥85 dB A, classified according to the
South African regulations on the daily permissible dose of noise
exposure8, named Noise Group 1; 2) Surface noise exposure, ≥85 dB
A, named Noise Group 2; 3) No known occupational noise exposure,
named control group; and 4) Uncertain levels of noise exposure,
e.g. students and trainees, named Noise Group 4. The control group
was matched with participants of noise group 1 and 2 based on
gender, race and age at the most recent audiogram test. Descriptive
and inferential statistics were employed. Measures of central
tendency and variability were used with analysis of covariance
(ANCOVA) and pairwise comparisons according to Fisher’s Least
Squares Differences Approach (F test). Results indicated that noise
exposed groups had significantly higher prevalence of high and low
frequency
hearing loss than the control group. High-frequency
hearing loss was also present in the control group. The greatest
differences in prevalence of
hearing loss were observed at 3, 4 kHz
and age group 36 to 45 years. Thresholds at 8 kHz were worse than
expected and decline slowed down with age. High-frequency
thresholds showed a non-linear growth pattern with age with a
greater decline at 2 kHz with age in the noise-exposed population
compared to the control group.
Hearing deteriorated more across age
groups with more noise-exposed years, and this deterioration was
most visible after 10 to 15 working years and at 3 kHz. Females had
better
hearing than males across the frequency spectrum. Black
males had significantly better high-frequency
hearing than white
males but significantly worse low-frequency
hearing than white male
counterparts. PLH values showed poor correlation (through
statistical analyses) with other well-accepted
hearing impairment
criteria. To date this was the largest study conducted on the
hearing of gold miners and the sample included a very large number
of black males exposed to occupational noise (N=17 933). Values
supplied in distribution table format are therefore unique and
contribute greatly to the knowledge base.
Advisors/Committee Members: Prof D C D Swanepoel (advisor).
Subjects/Keywords: Race;
Notch;
Degree of hearing loss;
Prevalence;
Noise exposure;
Gender;
Age related hearing loss;
Noise-induced hearing loss;
Gold mines;
Occupational noise;
Percentage loss of hearing;
UCTD
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
author], [. (2013). Noise-induced hearing loss : prevalence, degree and
impairment criteria in South African gold miners
. (Doctoral Dissertation). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-01152013-130215/
Chicago Manual of Style (16th Edition):
author], [No. “Noise-induced hearing loss : prevalence, degree and
impairment criteria in South African gold miners
.” 2013. Doctoral Dissertation, University of Pretoria. Accessed March 07, 2021.
http://upetd.up.ac.za/thesis/available/etd-01152013-130215/.
MLA Handbook (7th Edition):
author], [No. “Noise-induced hearing loss : prevalence, degree and
impairment criteria in South African gold miners
.” 2013. Web. 07 Mar 2021.
Vancouver:
author] [. Noise-induced hearing loss : prevalence, degree and
impairment criteria in South African gold miners
. [Internet] [Doctoral dissertation]. University of Pretoria; 2013. [cited 2021 Mar 07].
Available from: http://upetd.up.ac.za/thesis/available/etd-01152013-130215/.
Council of Science Editors:
author] [. Noise-induced hearing loss : prevalence, degree and
impairment criteria in South African gold miners
. [Doctoral Dissertation]. University of Pretoria; 2013. Available from: http://upetd.up.ac.za/thesis/available/etd-01152013-130215/
22.
Melo, Uirá Souto.
Estudo epidemiológico e genético da surdez em dois municípios do estado da Paraíba, Brasil.
Degree: Mestrado, Biologia (Genética), 2013, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/41/41131/tde-19032014-132211/
;
► Os estados do Nordeste brasileiro concentram elevadas taxas de pessoas com deficiências, mas pouco se estudou a respeito de suas causas. O objetivo desse estudo…
(more)
▼ Os estados do Nordeste brasileiro concentram elevadas taxas de pessoas com deficiências, mas pouco se estudou a respeito de suas causas. O objetivo desse estudo foi determinar a prevalência da deficiência auditiva e estimar a contribuição dos fatores genéticos na sua etiologia nas populações de dois municípios do Nordeste brasileiro. Após indicação pelos agentes comunitários de saúde para avaliação clínico-genética, foram avaliados 182 indivíduos com perda auditiva manifestada antes dos 60 anos dos municípios de Gado Bravo (76 pacientes) e Queimadas (106 pacientes), com população de 8.376 e 41.049 habitantes, respectivamente. Em Queimadas, 13 pacientes eram homozigotos com a mutação c.35delG no gene GJB2 (13/106, 12,2%; 6/81, 7,4% das famílias). Já em Gado Bravo, somente um paciente era homozigoto com esta mutação (1/76, 1,3%; 1/55, 1,8% das famílias). A mutação m.A1555G no gene mitocondrial MTRNR1 e a mutação c.167delT no gene GJB2 não foram detectadas em ambos os municípios. Quanto às deleções do GJB6, apenas a del(GJB6-D13S1854) foi encontrada em quatro casos em Gado Bravo (4/76, 5,3%; 2/55, 3,6% das famílias). Após o sequenciamento completo do gene GJB2, foi detectada a mutação p.W24X (c.G71A) em heterozigose em três casos isolados do município de Gado Bravo (3/76, 3,9%). Em resumo, mutações patogênicas no lócus DNFB1 foram encontradas em 16% (34/212) dos alelos testados no município de Queimadas e em 9,9% (15/152) dos alelos testados no município de Gado Bravo. No total da casuística, ocorreram 11 pacientes com uma única mutação recessiva detectada (monoalélica) no lócus DFNB1. As amostras desses 11 pacientes foram submetidas à análise de MLPA na tentativa de identificar uma segunda mutação, do tipo variação do número de cópias, mas nenhuma mutação foi encontrada. O gene SLC26A4 foi sequenciado em amostras de famílias com padrão de herança autossômico recessivo sem mutação detectada no lócus DFNB1, que apresentaram ligação compatível por meio de microssatélites na região próxima a esse gene. Não foi detectada nenhuma mutação patogênica na região de código desse gene. Após o estudo de ligação por meio de array de SNPs e microssatélites em uma família com quatro afetados pela síndrome de Usher do município de Gado Bravo, o gene CLRN1 apareceu como provável candidato e as amostras desses pacientes foram selecionadas para sequenciamento. Foi detectada a mutação p.Y63X em homozigose nos quatro pacientes. As amostras dos outros pacientes com essa síndrome também foram sequenciadas. Essa mutação foi encontrada em homozigose em 21 dos 23 casos de síndrome de Usher em Gado Bravo. A porcentagem de casos de surdez com provável etiologia genética em Gado Bravo e Queimadas foi estimada em 55% e 45%, respectivamente
The states of the Brazilian Northeast concentrate high rates of people with disabilities, but little has been investigated about their causes. The aim of this study was to determine the prevalence of hearing impairment and estimate the contribution of genetic factors in its etiology in populations from two…
Advisors/Committee Members: Mingroni Netto, Regina Celia.
Subjects/Keywords: Epidemiologia; Epidemiology; GJB2; GJB2; Hearing loss; Surdez
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APA (6th Edition):
Melo, U. S. (2013). Estudo epidemiológico e genético da surdez em dois municípios do estado da Paraíba, Brasil. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/41/41131/tde-19032014-132211/ ;
Chicago Manual of Style (16th Edition):
Melo, Uirá Souto. “Estudo epidemiológico e genético da surdez em dois municípios do estado da Paraíba, Brasil.” 2013. Masters Thesis, University of São Paulo. Accessed March 07, 2021.
http://www.teses.usp.br/teses/disponiveis/41/41131/tde-19032014-132211/ ;.
MLA Handbook (7th Edition):
Melo, Uirá Souto. “Estudo epidemiológico e genético da surdez em dois municípios do estado da Paraíba, Brasil.” 2013. Web. 07 Mar 2021.
Vancouver:
Melo US. Estudo epidemiológico e genético da surdez em dois municípios do estado da Paraíba, Brasil. [Internet] [Masters thesis]. University of São Paulo; 2013. [cited 2021 Mar 07].
Available from: http://www.teses.usp.br/teses/disponiveis/41/41131/tde-19032014-132211/ ;.
Council of Science Editors:
Melo US. Estudo epidemiológico e genético da surdez em dois municípios do estado da Paraíba, Brasil. [Masters Thesis]. University of São Paulo; 2013. Available from: http://www.teses.usp.br/teses/disponiveis/41/41131/tde-19032014-132211/ ;

Vanderbilt University
23.
Soman, Uma Gokhale.
Characterizing Perception of Prosody in Children with Hearing Loss.
Degree: PhD, Hearing and Speech Sciences, 2017, Vanderbilt University
URL: http://hdl.handle.net/1803/10908
► The ability to adequately perceive and utilize the prosody of spoken language is important for successful communication. Children with hearing loss who use cochlear implants…
(more)
▼ The ability to adequately perceive and utilize the prosody of spoken language is important for successful communication. Children with
hearing loss who use cochlear implants have demonstrated deficits in perception of stress and intonation in spoken language, but not rhythm in music, compared to children who use
hearing aids or children who have normal
hearing. These deficits have been attributed in part to limitations of cochlear implant technology. Wearing a
hearing aid in addition to the cochlear implant can reduce some of these deficits. In this study, perception of stress, intonation, and speech rhythm was compared among 8-16 year old children with
hearing loss who used cochlear implants, children with
hearing loss who used bimodal technology - one cochlear implant and one
hearing aid in the contralateral ear, and children with normal
hearing. The results of this study indicated that most children were sensitive to stress, intonation, and rhythm of speech. Children with
hearing loss were comparable to children with normal
hearing in their sensitivity to stress and rhythm, and intonation present in unfiltered, connected speech, but were deficient in their perception of intonation present in low-pass filtered speech. Children with
hearing loss were comparable to children with normal
hearing when identifying the language of an utterance based on phonemic and prosodic cues, but were deficient when minimal phonemic cues were present. Children who used bilateral cochlear implants performed similarly to children who used bimodal technology, indicating that sensitivity to prosodic features was possible with either of the
hearing technologies. Audiological factors such as early amplification, longer duration of auditory exposure, and adequate low-frequency access had a positive impact on perception of prosody in speech. The finding that children with
hearing loss were comparable to children with normal
hearing in their perception of stress and intonation is in contrast to previous findings, and might be attributed to differences in task design as well as in audiological and intervention characteristics of the children in this study compared to previous studies.
Advisors/Committee Members: Rene Gifford (committee member), Anne Marie Tharpe (committee member), John Rieser (committee member), Karen Iler Kirk (committee member), Andrea Hillock-Dunn (committee member), Daniel H. Ashmead (Committee Chair).
Subjects/Keywords: Hearing loss; cochlear implants; children; perception; prosody
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APA (6th Edition):
Soman, U. G. (2017). Characterizing Perception of Prosody in Children with Hearing Loss. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/10908
Chicago Manual of Style (16th Edition):
Soman, Uma Gokhale. “Characterizing Perception of Prosody in Children with Hearing Loss.” 2017. Doctoral Dissertation, Vanderbilt University. Accessed March 07, 2021.
http://hdl.handle.net/1803/10908.
MLA Handbook (7th Edition):
Soman, Uma Gokhale. “Characterizing Perception of Prosody in Children with Hearing Loss.” 2017. Web. 07 Mar 2021.
Vancouver:
Soman UG. Characterizing Perception of Prosody in Children with Hearing Loss. [Internet] [Doctoral dissertation]. Vanderbilt University; 2017. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1803/10908.
Council of Science Editors:
Soman UG. Characterizing Perception of Prosody in Children with Hearing Loss. [Doctoral Dissertation]. Vanderbilt University; 2017. Available from: http://hdl.handle.net/1803/10908

Vanderbilt University
24.
Ryan, Hollea Ann McClellan.
Mother-Child Attachment Development in Young Children with Hearing Loss: Effects of Early Versus Late Diagnosis of Hearing Loss.
Degree: PhD, Hearing and Speech Sciences, 2012, Vanderbilt University
URL: http://hdl.handle.net/1803/13323
► Mother-infant attachment is a connection between a child and his/her mother that is dependent upon maternal sensitivity and accessibility. This relationship is well studied in…
(more)
▼ Mother-infant attachment is a connection between a child and his/her mother that is dependent upon maternal sensitivity and accessibility. This relationship is well studied in children with typical development as well as in those with special needs. However, our knowledge of attachment in children with
hearing loss is minimal compared to other mother-infant dyads. To confound this issue, most of this knowledge was collected prior to the implementation of newborn
hearing screenings, a process that leads to earlier diagnosis of
hearing loss in children. The attachment development in 21 young children (i.e., 2-6 years-old) with
hearing loss was evaluated using the Attachment Q-Set (AQS; Waters, 1985; 1995). Results of this study support the conclusion that children with
hearing loss can develop attachment security similarly to typical peers. Furthermore, there was some evidence to suggest that age of diagnosis of
hearing loss might not be an influencing factor in attachment development. In summary, even with early knowledge of
hearing loss, the attachments of children and their mothers are consistent with attachment development in the typical population.
Advisors/Committee Members: Daniel H. Ashmead (committee member), Mark Wolery (committee member), Mary Jo Ward (committee member), Anne Marie Tharpe (Committee Chair).
Subjects/Keywords: deafness; childhood hearing loss; attachment; AQS
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APA ·
Chicago ·
MLA ·
Vancouver ·
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Export
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APA (6th Edition):
Ryan, H. A. M. (2012). Mother-Child Attachment Development in Young Children with Hearing Loss: Effects of Early Versus Late Diagnosis of Hearing Loss. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/13323
Chicago Manual of Style (16th Edition):
Ryan, Hollea Ann McClellan. “Mother-Child Attachment Development in Young Children with Hearing Loss: Effects of Early Versus Late Diagnosis of Hearing Loss.” 2012. Doctoral Dissertation, Vanderbilt University. Accessed March 07, 2021.
http://hdl.handle.net/1803/13323.
MLA Handbook (7th Edition):
Ryan, Hollea Ann McClellan. “Mother-Child Attachment Development in Young Children with Hearing Loss: Effects of Early Versus Late Diagnosis of Hearing Loss.” 2012. Web. 07 Mar 2021.
Vancouver:
Ryan HAM. Mother-Child Attachment Development in Young Children with Hearing Loss: Effects of Early Versus Late Diagnosis of Hearing Loss. [Internet] [Doctoral dissertation]. Vanderbilt University; 2012. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1803/13323.
Council of Science Editors:
Ryan HAM. Mother-Child Attachment Development in Young Children with Hearing Loss: Effects of Early Versus Late Diagnosis of Hearing Loss. [Doctoral Dissertation]. Vanderbilt University; 2012. Available from: http://hdl.handle.net/1803/13323

University of Arizona
25.
Masri, Samer.
Roles of Parvalbumin-Expressing Interneurons in Physiological Changes to Primary Auditory Cortex After Hearing Loss and Blast Exposure
.
Degree: 2020, University of Arizona
URL: http://hdl.handle.net/10150/642110
► Hearing loss affects approximately 1 in 8 Americans and has a significant impact on quality of life, often leading to tinnitus and central auditory processing…
(more)
▼ Hearing loss affects approximately 1 in 8 Americans and has a significant impact on quality of life, often leading to tinnitus and central auditory processing disorder.
Hearing loss causes a cascade of changes to the auditory processing pathway, starting with death of hair cells in the inner ear and ultimately causing a series of physiological changes in primary auditory cortex (AI). Blast exposure commonly affects veterans and can lead to
hearing loss as well as Traumatic Brain Injury (TBI), which damages the soft tissue and vasculature of the central nervous system and can independently cause central auditory processing disorder. The distinct effects of
hearing loss and TBI on auditory processing remain poorly understood. Further research is needed to identify the role of AI in auditory processing deficits after
hearing loss and/or TBI, as well as to identify specific cellular mechanisms to serve as targets for potential therapeutic approaches.
First, I identify changes to the primary auditory cortex of rats following blast exposure with associated
hearing loss. This includes distortions in the normal tonotopic frequency map in the form of random, frequency specific expansions. Additionally, there are associated changes to the
hearing threshold and bandwidth of frequency tuning at individual cortical recording sites. These changes outline broad physiological deficits in auditory processing in primary auditory cortex after blast exposure.
Next, I show that blast exposure alone can impair temporal processing in AI, but concurrent
hearing loss dramatically exacerbates these impairments. I dissociate the effects of blast exposure and
hearing loss by protecting either one or both ears from
hearing loss during blast exposure. While blast exposure without
hearing loss causes deficits in temporal processing which could lead to central auditory processing disorder, blast exposure with associated
hearing loss causes more numerous and severe deficits. Specifically, only blast exposure with concurrent
hearing loss reduces the expression of the Parvalbumin protein in AI and causes deficits in gap detection behavior, which is used as a test for potential tinnitus.
Finally, I show that
hearing loss alone causes a set of changes to Parvalbumin-expressing inhibitory interneurons (PV neurons) in AI. This includes a reduction of Parvalbumin expression in AI, changes to the gene expression profiles of PV neurons, and an overall reduction in the inhibitory output of PV neurons. These changes are not mirrored in another population of neurons called Somatostatin-expressing interneurons. I show that deficits in gap detection behavior following
hearing loss can be rescued by Chemogenetic activation of PV neurons in AI.
Advisors/Committee Members: Bao, Shaowen (advisor), Fuglevand, Andrew (advisor), Nighorn, Alan (committeemember), Cowen, Stephen (committeemember).
Subjects/Keywords: Auditory;
Blast;
Cortex;
Hearing loss;
Interneuron;
Parvalbumin
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Masri, S. (2020). Roles of Parvalbumin-Expressing Interneurons in Physiological Changes to Primary Auditory Cortex After Hearing Loss and Blast Exposure
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/642110
Chicago Manual of Style (16th Edition):
Masri, Samer. “Roles of Parvalbumin-Expressing Interneurons in Physiological Changes to Primary Auditory Cortex After Hearing Loss and Blast Exposure
.” 2020. Doctoral Dissertation, University of Arizona. Accessed March 07, 2021.
http://hdl.handle.net/10150/642110.
MLA Handbook (7th Edition):
Masri, Samer. “Roles of Parvalbumin-Expressing Interneurons in Physiological Changes to Primary Auditory Cortex After Hearing Loss and Blast Exposure
.” 2020. Web. 07 Mar 2021.
Vancouver:
Masri S. Roles of Parvalbumin-Expressing Interneurons in Physiological Changes to Primary Auditory Cortex After Hearing Loss and Blast Exposure
. [Internet] [Doctoral dissertation]. University of Arizona; 2020. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/10150/642110.
Council of Science Editors:
Masri S. Roles of Parvalbumin-Expressing Interneurons in Physiological Changes to Primary Auditory Cortex After Hearing Loss and Blast Exposure
. [Doctoral Dissertation]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/642110

University of Ghana
26.
Amartey, B.T.
Hearing Loss among Patients Receiving Anti-Tuberculosis Treatment
.
Degree: 2018, University of Ghana
URL: http://ugspace.ug.edu.gh/handle/123456789/28106
► Background: Tuberculosis therapy is characterized by many side effects including hearing loss. It has been documented that the use of aminoglycosides for TB treatment is…
(more)
▼ Background: Tuberculosis therapy is characterized by many side effects including hearing loss. It has been documented that the use of aminoglycosides for TB treatment is the cause of the associated hearing impairment. The consequential effect of hearing impairment on the patient is high. This has its long-term socio-economic effect (social isolation and stigmatization) on patients, families and public health in general. Hearing loss can compromise treatment compliance and also affect the quality of life of patients during and after treatment.
Aim: The aim of the study was to determine and establish the prevalence of hearing loss among patients receiving treatment for TB.
Method: A quasi-experimental, post-test only with non-equivalent control group design involving 60 consenting patients receiving treatment for TB at the chest clinic of the Tema General Hospital between February and May 2018 and a control group of 60 age and gender-matched uninfected volunteers constituted this study. Data on demographics and case history were collected using a structured questionnaire. The hearing status of participants was assessed using conventional pure tone audiometry and transient evoked otoacoustic emission tests. Data were analyzed using the SPSS statistical software package.
Results: A hearing loss prevalence of 20% was found among patients receiving treatment for TB. Out of the 60 patients on TB medications assessed, 12 presented with hearing loss that ranged from mild to severe. Patients who presented with the poor thresholds were all referred in the OAE. Hearing thresholds of patients receiving anti-TB medications were significantly elevated (p<0.05) in comparison to the thresholds of the control group. A statistically significant (p<0.05) difference was observed between the hearing thresholds of patients receiving treatment and the uninfected volunteers especially at the high frequencies. A similar significant (p< 0.05) association was also found between exposure to TB medications and poor hearing thresholds.
Conclusion: Patients receiving treatment for TB usually demonstrate significantly elevated hearing thresholds which tend to be more pronounced at the high frequencies. Audiological management of these patients should, therefore, be an essential part of their therapeutic treatment plan. This will help improve their quality of life during and after treatment.
Subjects/Keywords: Hearing Loss;
Anti-Tuberculosis;
Tuberculosis Therapy
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Amartey, B. T. (2018). Hearing Loss among Patients Receiving Anti-Tuberculosis Treatment
. (Masters Thesis). University of Ghana. Retrieved from http://ugspace.ug.edu.gh/handle/123456789/28106
Chicago Manual of Style (16th Edition):
Amartey, B T. “Hearing Loss among Patients Receiving Anti-Tuberculosis Treatment
.” 2018. Masters Thesis, University of Ghana. Accessed March 07, 2021.
http://ugspace.ug.edu.gh/handle/123456789/28106.
MLA Handbook (7th Edition):
Amartey, B T. “Hearing Loss among Patients Receiving Anti-Tuberculosis Treatment
.” 2018. Web. 07 Mar 2021.
Vancouver:
Amartey BT. Hearing Loss among Patients Receiving Anti-Tuberculosis Treatment
. [Internet] [Masters thesis]. University of Ghana; 2018. [cited 2021 Mar 07].
Available from: http://ugspace.ug.edu.gh/handle/123456789/28106.
Council of Science Editors:
Amartey BT. Hearing Loss among Patients Receiving Anti-Tuberculosis Treatment
. [Masters Thesis]. University of Ghana; 2018. Available from: http://ugspace.ug.edu.gh/handle/123456789/28106

University of Ghana
27.
Tetteh, M.D.
Hearing Loss Among Sailors: A Study at the Western Naval Command, Sekondi
.
Degree: 2019, University of Ghana
URL: http://ugspace.ug.edu.gh/handle/123456789/32024
► Background: Hearing Sensitivity is the commonest form of hearing. Occupational hearing loss has received little or no attention in most industries and has left many…
(more)
▼ Background: Hearing Sensitivity is the commonest form of hearing. Occupational hearing loss has received little or no attention in most industries and has left many employees with hearing loss of varying degrees after retirement. The navy has not been spared in this area as some of its personnel exposed to varying levels of noise. This study was carried out to determine the prevalence of hearing loss and to investigate the risk factors associated with hearing loss among naval personnel of the Ghana Armed Forces at the Secondi Naval Base.
Methods: The descriptive cross-sectional study design was employed in this study. A random sample of 153 naval personnel from the Sekondi naval base took part in this study. Both air and bone conduction of the ear were measured using an audiometer and additional data collect using a structured questionnaire. Data analysis in the form of descriptive statistics and inferential statistical tests, specifically Independent t-test and the Chi-square statistic were done using the Statistical Package for Social Sciences (V. 22.0).
Results: The prevalence of hearing loss among the naval personnel was 28.1%. Working in the engine room, ageing, diabetes and hypertension were the main risk factors associated with hearing loss. Other less significant risk factors were non-use and poor use of ear protectors, and exposure to loud music.
Conclusion: The prevalence of hearing loss among naval personnel remains a source of concern. The Ghana navy command and the health directorate of the Ghana Armed Forces should carry out regular ear and hearing screening of their naval personnel for early identification, treatment and prevention of hearing loss among the personnel. Earmuffs and earplugs should also be provided for the naval personnel with proper instruction on its use.
Subjects/Keywords: Hearing Loss;
Sailors;
Western;
Naval Command;
Sekondi
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tetteh, M. D. (2019). Hearing Loss Among Sailors: A Study at the Western Naval Command, Sekondi
. (Masters Thesis). University of Ghana. Retrieved from http://ugspace.ug.edu.gh/handle/123456789/32024
Chicago Manual of Style (16th Edition):
Tetteh, M D. “Hearing Loss Among Sailors: A Study at the Western Naval Command, Sekondi
.” 2019. Masters Thesis, University of Ghana. Accessed March 07, 2021.
http://ugspace.ug.edu.gh/handle/123456789/32024.
MLA Handbook (7th Edition):
Tetteh, M D. “Hearing Loss Among Sailors: A Study at the Western Naval Command, Sekondi
.” 2019. Web. 07 Mar 2021.
Vancouver:
Tetteh MD. Hearing Loss Among Sailors: A Study at the Western Naval Command, Sekondi
. [Internet] [Masters thesis]. University of Ghana; 2019. [cited 2021 Mar 07].
Available from: http://ugspace.ug.edu.gh/handle/123456789/32024.
Council of Science Editors:
Tetteh MD. Hearing Loss Among Sailors: A Study at the Western Naval Command, Sekondi
. [Masters Thesis]. University of Ghana; 2019. Available from: http://ugspace.ug.edu.gh/handle/123456789/32024
28.
LOUGHREY, DAVID.
Age-related hearing loss and neurocognitive function: Normal and pathological processes in cognitive ageing.
Degree: School of Medicine. Discipline of Psychiatry, 2018, Trinity College Dublin
URL: http://hdl.handle.net/2262/82838
► This thesis investigates age-related hearing loss (ARHL) as a potential biomarker and risk factor for cognitive decline and dementia. Two reviews were conducted to examine…
(more)
▼ This thesis investigates age-related
hearing loss (ARHL) as a potential biomarker and risk factor for cognitive decline and dementia. Two reviews were conducted to examine the evidence for an association in the epidemiological and experimental literature. Both reviews found sufficient support for an association and, in particular, a mechanistic association whereby ARHL affects cognitive function. Based on these two reviews, a hypothetical model termed Neurocognitive Implicit-Explicit Asymmetric Decline (NIEAD), whereby ARHL mechanistically causes cognitive decline, was posited. This model postulates that ARHL will be associated with decline in implicit or bottom-up cognitive processes but relative maintenance in explicit cognitive processes. This hypothesis was assessed in three studies in which a sample of older adults with
hearing loss was compared to a control group using indices of implicit and explicit function. The results from these studies indicated support for this model. The overall conclusion of this thesis is that further research is warranted into the association between ARHL and cognitive ageing.
Advisors/Committee Members: Brennan, Sabina, Lawlor, Brian.
Subjects/Keywords: Age-related hearing loss; Cognition; Dementia
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
LOUGHREY, D. (2018). Age-related hearing loss and neurocognitive function: Normal and pathological processes in cognitive ageing. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/82838
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
LOUGHREY, DAVID. “Age-related hearing loss and neurocognitive function: Normal and pathological processes in cognitive ageing.” 2018. Thesis, Trinity College Dublin. Accessed March 07, 2021.
http://hdl.handle.net/2262/82838.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
LOUGHREY, DAVID. “Age-related hearing loss and neurocognitive function: Normal and pathological processes in cognitive ageing.” 2018. Web. 07 Mar 2021.
Vancouver:
LOUGHREY D. Age-related hearing loss and neurocognitive function: Normal and pathological processes in cognitive ageing. [Internet] [Thesis]. Trinity College Dublin; 2018. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/2262/82838.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
LOUGHREY D. Age-related hearing loss and neurocognitive function: Normal and pathological processes in cognitive ageing. [Thesis]. Trinity College Dublin; 2018. Available from: http://hdl.handle.net/2262/82838
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Washington
29.
McClannahan, Katrina Sue.
Perceptual and Neurophysiological Effects of Treated and Untreated Hearing Loss in Older Adults.
Degree: PhD, 2017, University of Washington
URL: http://hdl.handle.net/1773/38684
► The purpose of this dissertation work was to examine the impact of auditory deprivation in the form of age-related hearing loss (ARHL) and auditory stimulation…
(more)
▼ The purpose of this dissertation work was to examine the impact of auditory deprivation in the form of age-related
hearing loss (ARHL) and auditory stimulation in the form of
hearing aid use, on the neural registration and abilities to use sound for higher level cognitive tasks, in older adults (aged 55-75). Three groups were examined: 1) NH: older adults with clinically normal
hearing, 2) u-HL: peers with bilateral mild to moderate/moderately- severe sensory-neural
hearing loss who have never worn
hearing aids and 3) t-HL: peers with a similar amount of
hearing loss, but who have been treated through binaural amplification (
hearing aids). Participants completed two sessions: 1) Behavioral tests: Audiometry, cognitive screening, quality of life questionnaires, nonverbal IQ test, speech recognition in quiet and noise, and tests of verbal working memory function (both auditory and visual); 2) Electrophysiology: Evoked potentials (P1-N1-P2) recorded in response to a speech syllable presented at two different sound levels (equal sound pressure level (SPL) and equal sensation level (SL)). All three groups performed similarly on tests of speech perception in noise, working memory and nonverbal IQ, but differed on self-report measures of
hearing handicap. Both
hearing loss groups indicated greater reported greater
hearing handicap (HHIE) than NH groups. Additionally, individuals with untreated
hearing loss showed a positive relationship between working memory performance and speech understanding in noise. Neural measures indicated significant morphological differences (latency and amplitude) between groups, but only when the stimuli were presented at equal SPL. Once audibility was accounted for (equal SL levels) these differences were not present, suggesting group differences were due to audibility, and not central changes secondary to auditory deprivation. Results highlight the importance of the audibility of sound, and suggest that early sound processing and later use of sound for processes involved in communication is not permanently affected by mild to moderate/moderately-severe ARHL.
Advisors/Committee Members: Tremblay, Kelly L (advisor).
Subjects/Keywords: Aging; Electrophysiology; Hearing Loss; Audiology; Speech
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APA ·
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MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
McClannahan, K. S. (2017). Perceptual and Neurophysiological Effects of Treated and Untreated Hearing Loss in Older Adults. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/38684
Chicago Manual of Style (16th Edition):
McClannahan, Katrina Sue. “Perceptual and Neurophysiological Effects of Treated and Untreated Hearing Loss in Older Adults.” 2017. Doctoral Dissertation, University of Washington. Accessed March 07, 2021.
http://hdl.handle.net/1773/38684.
MLA Handbook (7th Edition):
McClannahan, Katrina Sue. “Perceptual and Neurophysiological Effects of Treated and Untreated Hearing Loss in Older Adults.” 2017. Web. 07 Mar 2021.
Vancouver:
McClannahan KS. Perceptual and Neurophysiological Effects of Treated and Untreated Hearing Loss in Older Adults. [Internet] [Doctoral dissertation]. University of Washington; 2017. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/1773/38684.
Council of Science Editors:
McClannahan KS. Perceptual and Neurophysiological Effects of Treated and Untreated Hearing Loss in Older Adults. [Doctoral Dissertation]. University of Washington; 2017. Available from: http://hdl.handle.net/1773/38684

University of Pretoria
30.
Strauss, Susan.
Noise-induced
hearing loss : prevalence, degree and impairment criteria in South
African gold miners.
Degree: Speech-Language Pathology and
Audiology, 2012, University of Pretoria
URL: http://hdl.handle.net/2263/23347
► Despite the preventability of noise-induced hearing loss (NIHL) a high prevalence is still reported in South African mines. The study aimed to describe the hearing…
(more)
▼ Despite the preventability of noise-induced
hearing loss
(NIHL) a high prevalence is still reported in South African mines.
The study aimed to describe the
hearing of gold miners pertaining
to the prevalence and degree of NIHL and effectiveness of current
RSA impairment criteria to identify NIHL. The audiological data,
collected between 2001 and 2008, of 57 714 mine workers were
investigated in this retrospective cohort study. Data was accessed
through the mine’s electronic database and exported to Microsoft
Excel 2007 worksheets. Participants were categorised in terms of
noise exposure (level and working years), age, race and gender.
Noise exposure levels were described in terms of a specific
occupation and categorized into four groups based on dosimeter data
received from the mine’s noise hygienist, namely: 1) Below surface
(underground) noise exposure, ≥85 dB A, classified according to the
South African regulations on the daily permissible dose of noise
exposure8, named Noise Group 1; 2) Surface noise exposure, ≥85 dB
A, named Noise Group 2; 3) No known occupational noise exposure,
named control group; and 4) Uncertain levels of noise exposure,
e.g. students and trainees, named Noise Group 4. The control group
was matched with participants of noise group 1 and 2 based on
gender, race and age at the most recent audiogram test. Descriptive
and inferential statistics were employed. Measures of central
tendency and variability were used with analysis of covariance
(ANCOVA) and pairwise comparisons according to Fisher’s Least
Squares Differences Approach (F test). Results indicated that noise
exposed groups had significantly higher prevalence of high and low
frequency
hearing loss than the control group. High-frequency
hearing loss was also present in the control group. The greatest
differences in prevalence of
hearing loss were observed at 3, 4 kHz
and age group 36 to 45 years. Thresholds at 8 kHz were worse than
expected and decline slowed down with age. High-frequency
thresholds showed a non-linear growth pattern with age with a
greater decline at 2 kHz with age in the noise-exposed population
compared to the control group.
Hearing deteriorated more across age
groups with more noise-exposed years, and this deterioration was
most visible after 10 to 15 working years and at 3 kHz. Females had
better
hearing than males across the frequency spectrum. Black
males had significantly better high-frequency
hearing than white
males but significantly worse low-frequency
hearing than white male
counterparts. PLH values showed poor correlation (through
statistical analyses) with other well-accepted
hearing impairment
criteria. To date this was the largest study conducted on the
hearing of gold miners and the sample included a very large number
of black males exposed to occupational noise (N=17 933). Values
supplied in distribution table format are therefore unique and
contribute greatly to the knowledge base.
Advisors/Committee Members: Swanepoel, De Wet (advisor).
Subjects/Keywords: Race;
Notch; Degree of
hearing loss;
Prevalence; Noise
exposure;
Gender; Age related
hearing loss; Noise-induced
hearing loss; Gold
mines; Occupational
noise; Percentage
loss of hearing;
UCTD
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Manager
APA (6th Edition):
Strauss, S. (2012). Noise-induced
hearing loss : prevalence, degree and impairment criteria in South
African gold miners. (Doctoral Dissertation). University of Pretoria. Retrieved from http://hdl.handle.net/2263/23347
Chicago Manual of Style (16th Edition):
Strauss, Susan. “Noise-induced
hearing loss : prevalence, degree and impairment criteria in South
African gold miners.” 2012. Doctoral Dissertation, University of Pretoria. Accessed March 07, 2021.
http://hdl.handle.net/2263/23347.
MLA Handbook (7th Edition):
Strauss, Susan. “Noise-induced
hearing loss : prevalence, degree and impairment criteria in South
African gold miners.” 2012. Web. 07 Mar 2021.
Vancouver:
Strauss S. Noise-induced
hearing loss : prevalence, degree and impairment criteria in South
African gold miners. [Internet] [Doctoral dissertation]. University of Pretoria; 2012. [cited 2021 Mar 07].
Available from: http://hdl.handle.net/2263/23347.
Council of Science Editors:
Strauss S. Noise-induced
hearing loss : prevalence, degree and impairment criteria in South
African gold miners. [Doctoral Dissertation]. University of Pretoria; 2012. Available from: http://hdl.handle.net/2263/23347
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