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You searched for subject:(Electrovestibulography). Showing records 1 – 3 of 3 total matches.

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University of Manitoba

1. Dastgheib, Zeinab. The use of spontaneous vestibular response for diagnosis of meniere’s disease.

Degree: Biomedical Engineering, 2016, University of Manitoba

Meniere's disease is a common inner ear disorder that affects balance and hearing. Electrovestibulography (EVestG) is a relatively new vestibular driven test that measures spontaneous and driven field potential activity recorded in the external ear canal in response to various vestibular stimuli. The main objectives of this thesis were to record and analyze EVestG signals in order to 1) testify whether the EVestG technology is capable of classifying individuals with Meniere’s from healthy ones, and if it is, then 2) identify the EVestG tilt stimulus providing the most informative response in relation to identifying Meniere’s symptoms; thus, optimizing the EVestG experimental protocol as a Meniere’s disease diagnostic aid. EVestG signals of two groups of Meniere’s and control individuals during seven different EVestG tilt stimuli were recorded and analyzed by linear and nonlinear signal processing techniques. Data of 14 with Meniere’s disease and 16 healthy individuals were used as the training set, while additional data of 21 individuals with vertiginous disorders (and suspected of Meniere’s disease) and 10 controls were used as the test set. An ad-hoc voting classifier built upon single-feature linear classifiers was designed, and used for classification of the two groups of both training and test datasets. The results showed an overall accuracy of 87% and 84% for training and test datasets, respectively. Among the seven different tilts that each evokes a specific part of the inner ear organ, the side tilt which stimulates most of the labyrinth and particularly the utricle, was found to generate the best characteristic features for identifying Meniere’s disease from controls. Thus, one may simplify the EVestG protocol to only the side tilt stimulus for a quick screening of Meniere’s disease. The proposed method encourages the use of EVestG technology as a non-invasive and potentially reliable diagnostic/screening tool to aid clinical diagnosis of Meniere’s diseases. Advisors/Committee Members: Moussavi, Zahra (Biomedical Engineering) Lithgow, Brian (Biomedical Engineering) (supervisor), Blakley, Brian (Otolaryngology) Kinsner, Witold (Electrical & Computer Engineering) Hadjileontiadis, Leontios (Electrical and Computer Engineering) (examiningcommittee).

Subjects/Keywords: Meniere's Disease; Classification; Fractal Dimension; Electrovestibulography

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Dastgheib, Z. (2016). The use of spontaneous vestibular response for diagnosis of meniere’s disease. (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31654

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):

Dastgheib, Zeinab. “The use of spontaneous vestibular response for diagnosis of meniere’s disease.” 2016. Thesis, University of Manitoba. Accessed December 07, 2019. http://hdl.handle.net/1993/31654.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Dastgheib, Zeinab. “The use of spontaneous vestibular response for diagnosis of meniere’s disease.” 2016. Web. 07 Dec 2019.

Vancouver:

Dastgheib Z. The use of spontaneous vestibular response for diagnosis of meniere’s disease. [Internet] [Thesis]. University of Manitoba; 2016. [cited 2019 Dec 07]. Available from: http://hdl.handle.net/1993/31654.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dastgheib Z. The use of spontaneous vestibular response for diagnosis of meniere’s disease. [Thesis]. University of Manitoba; 2016. Available from: http://hdl.handle.net/1993/31654

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Manitoba

2. Suleiman, Abdelbaset. Application of electrovestibulography on post-concussion syndrome: diagnosis and monitoring.

Degree: Biomedical Engineering, 2019, University of Manitoba

Following a mild Traumatic Brain Injury (mTBI), there can be neuropathological changes in the brain resulting in permanent or transient neurological symptoms and signs of a functional disturbance. The persistence of these symptoms for more than one month is usually referred to as Post-Concussion Syndrome (PCS). PCS severity usually increases when comorbid depression exists. Moreover, the diagnosis of PCS might be overlooked in favour of a diagnosis of depression due to the overlap in the symptoms of the two pathologies. This study, for the first time, presents staged research to evaluate a novel technology, called Electrovestibulography (EVestG), that holds the potential to objectively and cost-effectively be utilized as an assistive tool to diagnose PCS, its comorbid depression and quantitatively measure the recovery from PCS and its sequelae following a treatment. In the first stage of this research, two EVestG features were extracted from the recorded signals to distinguish PCS from age and gender-matched healthy controls. These two features resulted in an unbiased classification accuracy of 84% and 79% for separating healthy controls from PCS sufferers and for separating long (>3 months) and short-term (<3 months) PCS sufferers, respectively. Secondly, it was shown that the calculated accuracy for separating PCS from healthy controls can be affected when comorbid depression exists. By adding an EVestG depression-specific feature from a previous study, the calculated accuracy was improved from 83% to >90% for those with moderate/severe depression. Then, it was shown EVestG features could monitor recovery following repetitive Transcranial Magnetic Stimulation (rTMS) treatment for PCS with and without comorbid depression. Additionally, the EVestG features used have shown the potential to robustly detect and monitor changes, relatively independently, in both persistent PCS and in depression when comorbid PCS-depression present. Finally, the effect of mTBI on other sensory systems, in particular, that closely linked visual system was examined. Given the prevalence of convergence insufficiency (CI) among the mTBI population, as well as the link between the vestibular and oculomotor system, the effect of the mTBI on the CI was investigated and found to be significantly correlated with the EVestG features and PCS clinical assessment. Advisors/Committee Members: Moussavi, Zahra (Biomedical Engineering), Yahampath, Pradeepa (Electrical and Computer Engineering).

Subjects/Keywords: Post-concussion syndrome; ElectroVestibulography; Vestibular system; Transcranial magnetic stimulation; Convergence insufficiency

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Suleiman, A. (2019). Application of electrovestibulography on post-concussion syndrome: diagnosis and monitoring. (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/33775

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):

Suleiman, Abdelbaset. “Application of electrovestibulography on post-concussion syndrome: diagnosis and monitoring.” 2019. Thesis, University of Manitoba. Accessed December 07, 2019. http://hdl.handle.net/1993/33775.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Suleiman, Abdelbaset. “Application of electrovestibulography on post-concussion syndrome: diagnosis and monitoring.” 2019. Web. 07 Dec 2019.

Vancouver:

Suleiman A. Application of electrovestibulography on post-concussion syndrome: diagnosis and monitoring. [Internet] [Thesis]. University of Manitoba; 2019. [cited 2019 Dec 07]. Available from: http://hdl.handle.net/1993/33775.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Suleiman A. Application of electrovestibulography on post-concussion syndrome: diagnosis and monitoring. [Thesis]. University of Manitoba; 2019. Available from: http://hdl.handle.net/1993/33775

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Kumaragamage, Chathura Lahiru. Development and validation of a low noise signal acquisition protocol for inner ear evoked potentials.

Degree: Biomedical Engineering, 2013, University of Manitoba

A low noise signal acquisition protocol is required for inner ear evoked response recordings. In this work, a parallel amplifier approach was investigated to implement a bio-signal amplifier with low voltage noise (<5nV/√Hz), and low current noise (~2fA/√Hz). A modified ear electrode was investigated to reduce biological interference and thermal noise due to high impedance electrodes. A physical model to simulate electrical activity of the inner ear was developed to evaluate the accuracy of detecting vestibular field potentials (FPs) in the presence of various noise sources. Muscle activity and noise generated from the recording apparatus were found to be the dominating sources, degrading performance of FP extraction. Contributions from this work include: the design, implementation, and validation of a bio-signal amplifier with <5nV/√Hz voltage noise, and a low impedance electrode development and placement protocol. As a result, a signal-to-noise-ratio improvement of ~11dB (compared to the current protocol) was achieved. Advisors/Committee Members: Moussavi, Zahra (Elec. & Comp. Eng.), Blakley, Brian (Otolaryngology) Kordi, Behzad (Elec. & Comp. Eng.) (examiningcommittee).

Subjects/Keywords: biological signal amplifier; Electrovestibulography; parallel amplifier; ultra low noise

…122 xvi List of Abbreviations AP Action potential EVestG Electrovestibulography CAP… …potential. EVestG-Electrovestibulography: a novel electrophysiological measurement technique that… …Electrovestibulography (EVestG). In this work we identify the challenges of obtaining EVestG… …Electrovestibulography (EVestG) is an emerging electrophysiological measurement technique that has… …of the artificial ear was to qualitatively analyse and evaluate Electrovestibulography… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Kumaragamage, C. L. (2013). Development and validation of a low noise signal acquisition protocol for inner ear evoked potentials. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/22063

Chicago Manual of Style (16th Edition):

Kumaragamage, Chathura Lahiru. “Development and validation of a low noise signal acquisition protocol for inner ear evoked potentials.” 2013. Masters Thesis, University of Manitoba. Accessed December 07, 2019. http://hdl.handle.net/1993/22063.

MLA Handbook (7th Edition):

Kumaragamage, Chathura Lahiru. “Development and validation of a low noise signal acquisition protocol for inner ear evoked potentials.” 2013. Web. 07 Dec 2019.

Vancouver:

Kumaragamage CL. Development and validation of a low noise signal acquisition protocol for inner ear evoked potentials. [Internet] [Masters thesis]. University of Manitoba; 2013. [cited 2019 Dec 07]. Available from: http://hdl.handle.net/1993/22063.

Council of Science Editors:

Kumaragamage CL. Development and validation of a low noise signal acquisition protocol for inner ear evoked potentials. [Masters Thesis]. University of Manitoba; 2013. Available from: http://hdl.handle.net/1993/22063

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