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University of Arizona
1.
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 (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 January 16, 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. 16 Jan 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 Jan 16].
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 Arizona
2.
Luong, Athena.
Developing an Ideal Clinical Protocol for Recording Cervical Vestibular Evoked Myogenic Potentials
.
Degree: 2020, University of Arizona
URL: http://hdl.handle.net/10150/641404
► A cervical vestibular evoked myogenic potential (cVEMP) is a relatively new specialized test that has become an important component in a comprehensive vestibular test battery.…
(more)
▼ A cervical vestibular evoked myogenic potential (cVEMP) is a relatively new specialized test that has become an important component in a comprehensive vestibular test battery. cVEMPs examine the integrity of the saccule, an otolithic organ within the vestibule of the inner ear, and the inferior portion of the vestibular nerve. Based on review of the literature, there is great variability in the way this test is executed in terms of electrode placement and stimuli selection across individual clinics, which can result in varying results. In an attempt to determine an ideal clinical protocol that will ideally allow comparative results across all clinics, this study simultaneously recorded cVEMPs from three different electrode placements on the sternocleidomastoid muscle and varied the acoustic stimuli conditions. Results indicated that a 500 Hz tone burst, regardless of the duration, resulted in the most robust cVEMP response across all subjects for all locations. Additionally, the top electrode location on the SCM resulted in the most robust cVEMP response across all subjects and under all conditions.
Advisors/Committee Members: Velenovsky, David (advisor), Norrix, Linda (committeemember), Musiek, Frank (committeemember), Hartley, Michael (committeemember).
Subjects/Keywords: cervical evoked potentials;
evoked potentials;
myogenic potentials;
protocols;
vestibular
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APA (6th Edition):
Luong, A. (2020). Developing an Ideal Clinical Protocol for Recording Cervical Vestibular Evoked Myogenic Potentials
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/641404
Chicago Manual of Style (16th Edition):
Luong, Athena. “Developing an Ideal Clinical Protocol for Recording Cervical Vestibular Evoked Myogenic Potentials
.” 2020. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/641404.
MLA Handbook (7th Edition):
Luong, Athena. “Developing an Ideal Clinical Protocol for Recording Cervical Vestibular Evoked Myogenic Potentials
.” 2020. Web. 16 Jan 2021.
Vancouver:
Luong A. Developing an Ideal Clinical Protocol for Recording Cervical Vestibular Evoked Myogenic Potentials
. [Internet] [Doctoral dissertation]. University of Arizona; 2020. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/641404.
Council of Science Editors:
Luong A. Developing an Ideal Clinical Protocol for Recording Cervical Vestibular Evoked Myogenic Potentials
. [Doctoral Dissertation]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/641404
University of Arizona
3.
Whiteley, Aaron.
Establishing a Visual Guideline for the Locus of Auditory Cortex in Humans
.
Degree: 2020, University of Arizona
URL: http://hdl.handle.net/10150/641405
► Given the variability of human brain anatomy, there is a need to develop a guideline for visually identifying important auditory structures. Traditionally, visual guidelines have…
(more)
▼ Given the variability of human brain anatomy, there is a need to develop a guideline for visually identifying important auditory structures. Traditionally, visual guidelines have been taught in order to help clinicians quickly and reliably identify central auditory structures in the brain. However, the reliability of some of these guidelines have been accepted at face value but not necessarily studied extensively. This study examines the location of Heschl’s gyrus along the superior temporal plane and the consistency of the “two-thirds rule” – which states that Heschl’s gyrus appears in the most posterior third of the superior temporal plane. Heschl’s gyrus and intra-hemispheric measures along the superior temporal plane are examined, with new data reported. The relationship between the two-thirds rule and other variables such as: gender, hemisphere, the angle of Heschl’s gyrus, the number of Heschl’s gyri, and the type of ascending ramus are observed.
Advisors/Committee Members: Musiek, Frank (advisor), Velenovsky, David (committeemember), Kielar, Aneta (committeemember), Hartley, Michael (committeemember).
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APA (6th Edition):
Whiteley, A. (2020). Establishing a Visual Guideline for the Locus of Auditory Cortex in Humans
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/641405
Chicago Manual of Style (16th Edition):
Whiteley, Aaron. “Establishing a Visual Guideline for the Locus of Auditory Cortex in Humans
.” 2020. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/641405.
MLA Handbook (7th Edition):
Whiteley, Aaron. “Establishing a Visual Guideline for the Locus of Auditory Cortex in Humans
.” 2020. Web. 16 Jan 2021.
Vancouver:
Whiteley A. Establishing a Visual Guideline for the Locus of Auditory Cortex in Humans
. [Internet] [Doctoral dissertation]. University of Arizona; 2020. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/641405.
Council of Science Editors:
Whiteley A. Establishing a Visual Guideline for the Locus of Auditory Cortex in Humans
. [Doctoral Dissertation]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/641405
University of Arizona
4.
Ichiba, Kayla.
Electrophysiologic Measures For Binaural Masking Level Difference
.
Degree: 2020, University of Arizona
URL: http://hdl.handle.net/10150/641407
► This study evaluates the effect of phase change on auditory steady-state (ASSR), onset CAEP and ACC responses. The aim was to determine how phase change…
(more)
▼ This study evaluates the effect of phase change on auditory steady-state (ASSR), onset CAEP and ACC responses. The aim was to determine how phase change is encoded at lower levels of the auditory system and then processed at the cortical level. The test subjects were 23 young adults with normal hearing. ASSRs and stimulus-onset CAEPs were first recorded in a control condition using a 800 ms duration 500 Hz tone, amplitude modulated at 80 Hz, presented binaurally at 1/s. In the test condition, the phase of the 500 Hz tone was inverted 180° in one ear at 400 ms to evoke the ACC. Broad-band noise was introduced at an -5 dB SNR and the test condition repeated. Stimulus levels were varied to find the threshold of the ACC. Perceptual binaural masking level differences (BMLD) for a 500 Hz tone were also determined. At the phase change, ASSR amplitudes showed no difference between the in-phase and on-phase condition, and the ACC was 1.5-2.0 times larger than the onset CAEP response. This indicates amplification of the phase-change information in the ascending auditory pathway. These findings contribute to the development of an electrophysiological index for BMLD.
Advisors/Committee Members: Cone, Barbara (advisor), Velenovsky, David (committeemember), Musiek, Frank (committeemember), Miller, Julie (committeemember).
Subjects/Keywords: acoustic change complex;
audiology;
auditory evoked potentials;
binaural masking level difference;
central auditory evoked potentials;
electrophysiology
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APA ·
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Manager
APA (6th Edition):
Ichiba, K. (2020). Electrophysiologic Measures For Binaural Masking Level Difference
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/641407
Chicago Manual of Style (16th Edition):
Ichiba, Kayla. “Electrophysiologic Measures For Binaural Masking Level Difference
.” 2020. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/641407.
MLA Handbook (7th Edition):
Ichiba, Kayla. “Electrophysiologic Measures For Binaural Masking Level Difference
.” 2020. Web. 16 Jan 2021.
Vancouver:
Ichiba K. Electrophysiologic Measures For Binaural Masking Level Difference
. [Internet] [Doctoral dissertation]. University of Arizona; 2020. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/641407.
Council of Science Editors:
Ichiba K. Electrophysiologic Measures For Binaural Masking Level Difference
. [Doctoral Dissertation]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/641407
University of Arizona
5.
Yung, Wing Ka Angela.
Collecting Normative Data For Video Head Impulse Testing
.
Degree: 2017, University of Arizona
URL: http://hdl.handle.net/10150/625327
► The semicircular canals are involved in the coding of angular acceleration of the head and body. Presently, video-nystagmography (VNG) and specifically, caloric testing, is the…
(more)
▼ The semicircular canals are involved in the coding of angular acceleration of the head and body. Presently, video-nystagmography (VNG) and specifically, caloric testing, is the gold standard for evaluation of semicircular canal function. Caloric irrigation via VNG can only evaluate horizontal semicircular canal function; with this test, there is no way to evaluate the function of the anterior and posterior vertical semicircular canals. The video Head Impulse Test (vHIT) is a relatively new protocol that has the capability to test the function of the horizontal, anterior vertical, and posterior vertical semicircular canals. Because the vHIT system is newly available to clinicians, there is a need to collect normative data, particularly for the vertical semicircular canals. For this study, data was collected from 12 participants with no complaint or history of balance difficulty. Additionally, we compared our data with normative data collected in an earlier study to determine consistency. Lateral average velocity gain measurements were consistent however, a comparison of RALP an LARP velocity gain measurements showed inconsistency.
Advisors/Committee Members: Velenovsky, David S (advisor), Velenovsky, David S. (committeemember), Dean, James (committeemember), Musiek, Frank (committeemember).
Subjects/Keywords: Asymmetry;
Gain;
Vestibular;
vHIT;
Video Head Impulse Test;
VNG
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Manager
APA (6th Edition):
Yung, W. K. A. (2017). Collecting Normative Data For Video Head Impulse Testing
. (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/625327
Chicago Manual of Style (16th Edition):
Yung, Wing Ka Angela. “Collecting Normative Data For Video Head Impulse Testing
.” 2017. Masters Thesis, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/625327.
MLA Handbook (7th Edition):
Yung, Wing Ka Angela. “Collecting Normative Data For Video Head Impulse Testing
.” 2017. Web. 16 Jan 2021.
Vancouver:
Yung WKA. Collecting Normative Data For Video Head Impulse Testing
. [Internet] [Masters thesis]. University of Arizona; 2017. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/625327.
Council of Science Editors:
Yung WKA. Collecting Normative Data For Video Head Impulse Testing
. [Masters Thesis]. University of Arizona; 2017. Available from: http://hdl.handle.net/10150/625327
University of Arizona
6.
Dailey, Natalie S.
Neurological Models of Dyslexia
.
Degree: 2016, University of Arizona
URL: http://hdl.handle.net/10150/622935
► The reading network is only partially understood and even less is known regarding how the network functions when reading is impaired. Dyslexia is characterized by…
(more)
▼ The reading network is only partially understood and even less is known regarding how the network functions when reading is impaired. Dyslexia is characterized by poor phonological processing and affects roughly 5-12% of the population. The Dorsal-Ventral and Cerebellar-Deficit models propose distinct behavioral and structural differences in young adults with dyslexia. Behavioral assessments were used to determine if deficits for young adults with dyslexia were restricted to the literacy domain or dispersed among reading and associated behavioral domains. Diffusion tensor imaging (DTI) was used determine the extent to which white matter pathways and gray matter regions differ structurally in young adults with dyslexia. The present study also investigated whether brain-behavior relationships exist and are consistent with the theoretical models of reading in this population. Findings show that young adults with dyslexia exhibited deficits in both literacy and associated behavioral domains, including verbal working memory and motor function. Structural findings showed increased fractional anisotropy in the left anterior region (the aslant) and decreased fractional anisotropy in left posterior regions (inferior occipital fasciculus and vertical occipital fasciculus) of the reading network for young adults with dyslexia. Brain-behavior associations were found between the right inferior frontal gyrus and decoding for those with dyslexia. These findings provide support for the use of an altered reading network by young adults with dyslexia, as outlined by the Dorsal-Ventral model of reading. Limited structural and behavior findings support of the Cerebellar-Deficit model of reading, findings that warrant additional investigation.
Advisors/Committee Members: Plante, Elena (advisor), Plante, Elena (committeemember), Alt, Mary (committeemember), Musiek, Frank (committeemember), Peterson, Mary (committeemember).
Subjects/Keywords: Dyslexia;
Reading network;
Diffusion tensor imaging (DTI)
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APA (6th Edition):
Dailey, N. S. (2016). Neurological Models of Dyslexia
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/622935
Chicago Manual of Style (16th Edition):
Dailey, Natalie S. “Neurological Models of Dyslexia
.” 2016. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/622935.
MLA Handbook (7th Edition):
Dailey, Natalie S. “Neurological Models of Dyslexia
.” 2016. Web. 16 Jan 2021.
Vancouver:
Dailey NS. Neurological Models of Dyslexia
. [Internet] [Doctoral dissertation]. University of Arizona; 2016. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/622935.
Council of Science Editors:
Dailey NS. Neurological Models of Dyslexia
. [Doctoral Dissertation]. University of Arizona; 2016. Available from: http://hdl.handle.net/10150/622935
University of Arizona
7.
Everett, Alyssa J.
Cognitive and Electrophysiologic Correlates of Listening in Noise
.
Degree: 2018, University of Arizona
URL: http://hdl.handle.net/10150/631293
► People with hearing loss experience many challenges when adjusting to using amplification (hearing aids). An almost universal complaint is difficulty hearing in the presence of…
(more)
▼ People with hearing loss experience many challenges when adjusting to using
amplification (hearing aids). An almost universal complaint is difficulty hearing in the presence
of noise. The Acceptable Noise Level (ANL) test is used to estimate a person’s tolerance for
listening with noise present. Better tolerance is associated with greater success with
amplification, as measured by duration and consistency of use. Yet, there are unknowns about
why this should be so. One question is whether the ANL is related to the brain’s ability to inhibit
or suppress noise. Another is whether ANL is a stable value or if it changes when challenging
cognitive tasks are performed. Two experiments in this study analyze the effects of a cognitive
load on unilaterally and bilaterally presented ANL scores and their relationship to the sensory
gating mechanism measured through cortical auditory evoked potentials (CAEP). Results
indicated a significant increase in the ANL score measured with the addition of a cognitive load
in the unilateral and bilateral condition. A number of statistical analyses were performed to
assess differences between measurements of CAEPs and behavioral results and none were
statistically significant.
Advisors/Committee Members: Cone, Barbara (advisor), Marrone, Nicole (committeemember), Musiek, Frank (committeemember), Velenovsky, David (committeemember), Griffin, Stephanie (committeemember).
Subjects/Keywords: Acceptable Noise Level;
Cognitive Load;
Cortical Auditory Evoked Potential;
Electrophysiology;
Hearing in Noise
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APA (6th Edition):
Everett, A. J. (2018). Cognitive and Electrophysiologic Correlates of Listening in Noise
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/631293
Chicago Manual of Style (16th Edition):
Everett, Alyssa J. “Cognitive and Electrophysiologic Correlates of Listening in Noise
.” 2018. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/631293.
MLA Handbook (7th Edition):
Everett, Alyssa J. “Cognitive and Electrophysiologic Correlates of Listening in Noise
.” 2018. Web. 16 Jan 2021.
Vancouver:
Everett AJ. Cognitive and Electrophysiologic Correlates of Listening in Noise
. [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/631293.
Council of Science Editors:
Everett AJ. Cognitive and Electrophysiologic Correlates of Listening in Noise
. [Doctoral Dissertation]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/631293
University of Arizona
8.
Mongelli, Janette Marie.
A Parametric Exploration of the Paired-Stimulus Suppression Paradigm
.
Degree: 2019, University of Arizona
URL: http://hdl.handle.net/10150/633163
► The paired-stimulus suppression paradigm has been used to evaluate sensory gating in the auditory nervous system. Previous work in the AHEAD Lab has employed the…
(more)
▼ The paired-stimulus suppression paradigm has been used to evaluate sensory gating in the auditory nervous system. Previous work in the AHEAD Lab has employed the paired-stimulus paradigm to investigate the perception of noise level or interference during speech perception tasks. In the present study, the effects of stimulus frequency and inter-stimulus interval were investigated as two previous experiments suggested that these could influence the amount of suppression observed. The aims of this study were to evaluate the effects of stimulus frequency and inter-stimulus interval on the latencies and amplitudes of the CAEP components evoked by each stimulus. Eleven normal hearing adults were tested using paired-stimulus paradigms in which both stimuli were 500 Hz or 4000 Hz tone bursts, and the interstimulus intervals were varied in 100 ms steps between 100 and 500 ms. The results indicated that stimulus frequency had an effect on the CAEP onset response latencies and amplitudes, whereas interstimulus interval did not. Conversely, interstimulus interval had an effect on the CAEP response amplitude to the second stimulus (the suppressed response) whereas the effect of stimulus frequency was not significant. The results of these findings will be discussed with respect to the physiological mechanisms proposed to explain these differences and the possible translation of a two-stimulus suppression paradigm into a clinical test of acceptable noise level for those who use hearing aids.
Advisors/Committee Members: Cone, Barbara K (advisor), Fabiano-Smith, Leah (committeemember), Velenovsky, David S. (committeemember), Musiek, Frank E. (committeemember).
Subjects/Keywords: cortical auditory evoked potentials;
P50;
sensory gating;
suppression;
two-click paradigm
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APA ·
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MLA ·
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Export
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Manager
APA (6th Edition):
Mongelli, J. M. (2019). A Parametric Exploration of the Paired-Stimulus Suppression Paradigm
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/633163
Chicago Manual of Style (16th Edition):
Mongelli, Janette Marie. “A Parametric Exploration of the Paired-Stimulus Suppression Paradigm
.” 2019. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/633163.
MLA Handbook (7th Edition):
Mongelli, Janette Marie. “A Parametric Exploration of the Paired-Stimulus Suppression Paradigm
.” 2019. Web. 16 Jan 2021.
Vancouver:
Mongelli JM. A Parametric Exploration of the Paired-Stimulus Suppression Paradigm
. [Internet] [Doctoral dissertation]. University of Arizona; 2019. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/633163.
Council of Science Editors:
Mongelli JM. A Parametric Exploration of the Paired-Stimulus Suppression Paradigm
. [Doctoral Dissertation]. University of Arizona; 2019. Available from: http://hdl.handle.net/10150/633163
University of Arizona
9.
Wong, Bryan M.
Planum Temporale: Morphologic Taxonomy of the Superior Temporal Plane
.
Degree: 2019, University of Arizona
URL: http://hdl.handle.net/10150/636683
► Background: Planum Temporale (PT) is a crucial neuroauditory structure located in the dorsal superior temporal plane (STP) posterior to Heschl’s gyrus (HG). The PT has…
(more)
▼ Background: Planum Temporale (PT) is a crucial neuroauditory structure located in the dorsal superior temporal plane (STP) posterior to Heschl’s gyrus (HG). The PT has been implicated in complex auditory function and is well known for its preponderance of leftward asymmetry in normal brains and classic “pie- shaped” morphology. While a majority of cases have easily identifiable PT and HG, there exist some cases in which distinguishability of these two structures is difficult due to morphological variation. The goal of this study is to create a taxonomy of PT morphological features in order to improve the sometimes difficult identification and differentiation of PT from surrounding structures. Methods: A total of 50 (100 hemispheres) healthy intact, high-resolution T1- weighted brain MRIs were obtained from Open Access Series of Imaging Studies (OASIS) and included in this retrospective study. There were 28 women and 22 men, all right-handed. Ages ranged from 18-57 (mean=26.44) years. A 3D cortical surface mesh (grey matter) for each brain was generated using FreeSurfer and manipulated to view the STP using BrainVISA Anatomist neuroimaging software. The PT was isolated from surrounding structures based on pre-defined anatomical criteria and subsequent surface area measurements, linear measurements and qualitative measures were made. Results: A total of four PT configurations were identified: (1) Pie-shaped [45%], (2) Trapezoid-shaped [27%], (3) Rectangular-shaped [19%], and (4) None [9%]. Mean surface areas of measurable PT configurations were: 511.96 mm2 for “Pie-shaped” (n=45), 517.36 mm2 for “Trapezoid-shaped” (n=27) and 472.12mm2 for “Rectangular-shaped” (n=19). The fourth category, “None” (n=9), was not calculable. There were significantly more “Trapezoid-shaped” PTs in females (p<.05). The “None” category occurred significantly more in males (p<.05) and in the right hemisphere (p<.05). Furthermore, the left hemisphere demonstrated significantly greater surface area for “Pie-shaped” PTs (p<.05). Conclusion: We believe that the proposed classifications is the first step in creating a comprehensive taxonomy of the STP. This will aid neuroanatomists, clinicians and students in terms of differentiation of sometimes complex topography of the STP.
Advisors/Committee Members: Musiek, Frank (advisor), Fuglevand, Andrew (committeemember), Cone, Barbara (committeemember), Kielar, Aneta (committeemember).
Subjects/Keywords: auditory cortex;
heschls gyrus;
planum temporale;
superior temporal plane;
taxonomy
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APA (6th Edition):
Wong, B. M. (2019). Planum Temporale: Morphologic Taxonomy of the Superior Temporal Plane
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/636683
Chicago Manual of Style (16th Edition):
Wong, Bryan M. “Planum Temporale: Morphologic Taxonomy of the Superior Temporal Plane
.” 2019. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/636683.
MLA Handbook (7th Edition):
Wong, Bryan M. “Planum Temporale: Morphologic Taxonomy of the Superior Temporal Plane
.” 2019. Web. 16 Jan 2021.
Vancouver:
Wong BM. Planum Temporale: Morphologic Taxonomy of the Superior Temporal Plane
. [Internet] [Doctoral dissertation]. University of Arizona; 2019. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/636683.
Council of Science Editors:
Wong BM. Planum Temporale: Morphologic Taxonomy of the Superior Temporal Plane
. [Doctoral Dissertation]. University of Arizona; 2019. Available from: http://hdl.handle.net/10150/636683
University of Arizona
10.
Smith, Spencer Benjamin.
Assessing Human Medial Olivocochlear Reflex Function with Complementary Pre-Neural and Neural Assays
.
Degree: 2017, University of Arizona
URL: http://hdl.handle.net/10150/625574
► The auditory nervous system contains an extensive and distributed network of efferent pathways connecting auditory cortices to cochleae. At the most caudal level of the…
(more)
▼ The auditory nervous system contains an extensive and distributed network of efferent pathways connecting auditory cortices to cochleae. At the most caudal level of the efferent auditory system, cochlear outer hair cells (OHCs) receive direct innervation from the auditory brainstem via the medial olivocochlear (MOC) bundle. Through the MOC bundle, the brainstem modulates cochlear amplifier gain – an effect termed the MOC reflex. One putative role of the MOC reflex is improving the signal-to-noise ratio by reducing cochlear gain for noise (i.e., "unmasking"). The human MOC reflex has been studied using pre-neural assays of OHC function, such as otoacoustic emissions. A limitation of this approach is that it is insensitive to subsequent “downstream” MOC reflex effects on the neural ensembles that mediate hearing. To elucidate the functional role of the MOC reflex, it is imperative to understand relationships between the pre-neural OAE assays of MOC reflex function and their downstream neural complements: compound nerve action potentials and auditory brainstem responses. The specific aims of this dissertation were to 1) examine predictive relationships between complementary pre-neural and neural assays of MOC reflex function, and 2) test the hypothesis that the human MOC reflex is advantageous in speech-in-noise processing. Three experiments were undertaken to address these aims. In the first experiment, click-evoked otoacoustic emissions and click- and chirp- evoked auditory nerve compound action potentials were measured with and without activation of the MOC reflex using contralateral noise. We hypothesized that MOC reflex amplitude inhibition of compound action potentials would be larger than otoacoustic emission amplitude inhibition and that compound action potential inhibition would be predicted by otoacoustic emissions inhibition. In the second experiment, distortion product otoacoustic emissions and distortion product frequency following responses were measured with and without activation of the MOC reflex using contralateral noise. We hypothesized than MOC reflex inhibition of distortion product frequency following responses would be larger than distortion product otoacoustic emissions and that distortion product frequency following response inhibition would be predicted by distortion product otoacoustic emission inhibition. In the third experiment, we measured MOC reflex strength using otoacoustic emissions as well as brainstem speech-in-noise processing with and without activation of the MOC reflex. We hypothesized that otoacoustic emission inhibition would predict brainstem speech-in-noise unmasking. The results of Experiment 1 suggested that compound action potential amplitude inhibition was larger than otoacoustic emission amplitude inhibition when results were reported on the same scale. Further, chirp-evoked compound action potential inhibition was larger than click-evoked compound action potential inhibition, suggesting that chirps may be a better tool for measuring MOC reflex inhibition of auditory…
Advisors/Committee Members: Cone, Barbara K (advisor), Cone, Barbara K. (committeemember), Musiek, Frank E. (committeemember), Plante, Elena (committeemember), Velenovsky, David S. (committeemember).
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APA ·
Chicago ·
MLA ·
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APA (6th Edition):
Smith, S. B. (2017). Assessing Human Medial Olivocochlear Reflex Function with Complementary Pre-Neural and Neural Assays
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/625574
Chicago Manual of Style (16th Edition):
Smith, Spencer Benjamin. “Assessing Human Medial Olivocochlear Reflex Function with Complementary Pre-Neural and Neural Assays
.” 2017. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/625574.
MLA Handbook (7th Edition):
Smith, Spencer Benjamin. “Assessing Human Medial Olivocochlear Reflex Function with Complementary Pre-Neural and Neural Assays
.” 2017. Web. 16 Jan 2021.
Vancouver:
Smith SB. Assessing Human Medial Olivocochlear Reflex Function with Complementary Pre-Neural and Neural Assays
. [Internet] [Doctoral dissertation]. University of Arizona; 2017. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/625574.
Council of Science Editors:
Smith SB. Assessing Human Medial Olivocochlear Reflex Function with Complementary Pre-Neural and Neural Assays
. [Doctoral Dissertation]. University of Arizona; 2017. Available from: http://hdl.handle.net/10150/625574
11.
Cheek, Diane Elizabeth.
Employing the Acoustic Change Complex for Vowel Discrimination
.
Degree: 2018, University of Arizona
URL: http://hdl.handle.net/10150/628022
► A change occurring within an acoustic stream evokes the cortical potential known as the acoustic change complex (ACC). The present study addressed the effects of…
(more)
▼ A change occurring within an acoustic stream evokes the cortical potential known as the acoustic change complex (ACC). The present study addressed the effects of level and vowel contrast type on ACC amplitudes and latencies. Nineteen normally hearing adults were tested with vowel tokens, /a/, /i/, /o/, and /u/, of 500 ms duration presented at 2/s, in an oddball paradigm at 40 and 70 dBA in the sound field. The ACC was present for all vowel contrasts. The ACC for vowel contrasts are robust even at low levels (40 dBA), i.e., 25-30 dB HL, as evidenced by the high prevalence of responses in the contrast (vowel change) conditions that were significantly greater in amplitude than in the control (no vowel change) conditions. ACC absolute amplitudes were significantly larger at 70 dBA and amplitudes for control conditions were 4-6 times smaller than contrast conditions, but latencies were not sensitive to level or vowel type. ACC amplitude ratios were then calculated as: amplitude of contrast responses ÷ amplitude of control responses. The ACC amplitude ratios varied with vowel pair and by level. The distribution of amplitude ratios obtained indicated that over 90% of ratios are greater than 1.0, and over 84% are greater than 2.0, suggesting that this metric is a sensitive measure of cortical speech feature discrimination. These data set a baseline for a larger study of the ACC in infants, children, and adults with hearing loss.
Advisors/Committee Members: Cone, Barbara (advisor), Velenovsky, David (committeemember), Musiek, Frank (committeemember), Dean, James (committeemember), Alt, Mary (committeemember).
Subjects/Keywords: Acoustic change complex;
Auditory evoked potential;
Cortical auditory evoked potential;
Speech perception;
Vowel discrimination
…the University of Arizona Human Subjects
Protection Program (Institutional Review Board…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cheek, D. E. (2018). Employing the Acoustic Change Complex for Vowel Discrimination
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/628022
Chicago Manual of Style (16th Edition):
Cheek, Diane Elizabeth. “Employing the Acoustic Change Complex for Vowel Discrimination
.” 2018. Doctoral Dissertation, University of Arizona. Accessed January 16, 2021.
http://hdl.handle.net/10150/628022.
MLA Handbook (7th Edition):
Cheek, Diane Elizabeth. “Employing the Acoustic Change Complex for Vowel Discrimination
.” 2018. Web. 16 Jan 2021.
Vancouver:
Cheek DE. Employing the Acoustic Change Complex for Vowel Discrimination
. [Internet] [Doctoral dissertation]. University of Arizona; 2018. [cited 2021 Jan 16].
Available from: http://hdl.handle.net/10150/628022.
Council of Science Editors:
Cheek DE. Employing the Acoustic Change Complex for Vowel Discrimination
. [Doctoral Dissertation]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/628022
. 
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