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Effect of Ototoxic Drugs on the Amphibian Auditory System: Injection of Gentamicin Sulfate into Anuran Otic Capsules and Recovery of ThresholdsBrown, Michael Patrick 17 May 1995 (has links)
Hair cell trauma from aminoglycosides, which may lead to permanent loss of hair cells in mammals, was studied physiologically in frogs by measuring an auditory evoked potential (AEP) in Rana pipiens. The AEP was evaluated in order to measure threshold shift (TS) and recovery from TS after the administration of the aminoglycoside antibiotic, gentamicin. To obtain an AEP, chronic electrodes were implanted into the cranium near the cochlear nucleus. The frogs were then exposed to frequency-specific narrow band ~clicks" which included a single period 1 kHz sinewave, and a computer synthesized high frequency and low frequency click. Amphibians have two hearing organs, the amphibian and basilar papillae, sensitive to low (150-1500) and high (1500-2000) frequencies, respectively. The low (AP) and high (BP) frequency clicks were created to stimulate specifically the corresponding papillae. After normal thresholds were recorded for each frog, gentamicin sulfate, 200 μM, 300 μM, or 400 μM, was injected bilaterally into the otic capsules. Thresholds were recorded until the TS had disappeared, allowing the threshold recovery period to be measured. The injections of 200 μM yielded a 10 dB change in one animal and no change in two others. The injection of 300 μM into 10 frogs and 400 μM into 20 frogs yielded at least a 10 dB change in 60% and 93% of the frogs, respectively, with the concentration of 400 μM producing threshold shifts of 20 dB. Thus, the threshold shifts were dose-dependent. Recovery times varied between six and fourteen days. No apparent differences between thresholds for the high frequency click, low frequency click and sinewave clicks were observed.
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Galvanic vestibular stimulation applied to flight training a thesis /Hanson, Joel. Slivovsky, Lynne A. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Mode of access: Internet. Title from PDF title page; viewed on Jan. 20, 2010. Major professor: Dr. Lynne Slivovsky. "Presented to the faculty of the College of Engineering, California Polytechnic State University." "In partial fulfillment of the requirements for the degree [of] Master of Science in Electrical Engineering." "July 2009." Includes bibliographical references (p. 102-104).
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A comparison of ocular and cervical vestibular evoked myogenic potentials in the evaluation of different stages of clinically certain Ménière's disease : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Audiology in the Department of Communication Disorders at the University of Canterbury /McElhinney, Sarah-Anne. January 2009 (has links)
Thesis (M. Aud.)--University of Canterbury, 2009. / Typescript (photocopy). Includes bibliographical references (p. 87-98). Also available via the World Wide Web.
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Postural disturbance in subjects with multiple ankle sprains the role of somatosensory and vestibular systems /Fu, Siu-ngor. January 2003 (has links)
Thesis (Ph. D.)--Hong Kong Polytechnic University, 2003. / Includes bibliographical references (leaves 199-216). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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General principles of cerebellar organization : correlating anatomy, physiology and biochemistry in the pigeon vestibulocerebellumPakan, Janelle. January 2009 (has links)
Thesis (Ph.D.)--University of Alberta, 2009. / A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Centre for Neuroscience. Title from pdf file main screen (viewed on August 25, 2009). Includes bibliographical references.
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Postural disturbance in subjects with multiple ankle sprains the role of somatosensory and vestibular systems /Fu, Siu-ngor. January 2003 (has links)
Thesis (Ph. D.)--Hong Kong Polytechnic University, 2003. / Includes bibliographical references (leaves 199-216).
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Vestibular dysfunction associated with chronic traumatic brain injury in amateur rugby playersHill, Patricia M., January 1900 (has links)
Thesis (M.S)--Texas State University, San Marcos, 2005. / Includes bibliographical references (leaves 158-166). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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Vestibular dysfunction associated with chronic traumatic brain injury in amateur rugby playersHill, Patricia M., January 2005 (has links)
Thesis (M.S)--Texas State University, San Marcos, 2005. / Includes bibliographical references (leaves 158-166).
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Vestibular contributions to target-directed reaching movementsBrunke, Kirsten Marie. January 2006 (has links)
Thesis (M. Sc.)--University of British Columbia, 2006. / Includes bibliographical references.
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Vestibular contributions to target-directed reaching movementsBrunke, Kirsten Marie. January 1900 (has links)
Thesis (M.S.)--University of British Columbia, 2006. / Includes bibliographical references (leaves 40-42). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
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