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Published in: Experimental Brain Research 2/2013

01-08-2013 | Research Article

Postural responses to electrical stimulation of the vestibular end organs in human subjects

Authors: Christopher Phillips, Christina DeFrancisci, Leo Ling, Kaibao Nie, Amy Nowack, James O. Phillips, Jay T. Rubinstein

Published in: Experimental Brain Research | Issue 2/2013

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Abstract

A multichannel vestibular prosthesis that delivers electrical stimulation to the perilymph of individual semicircular canals is a potential new treatment modality for patients with vestibular deficiencies. Most research in this field has evaluated the efficacy of this approach by its ability to reproduce eye movements in response to head rotations. Our group has developed such a device and implanted it in four human subjects with intractable unilateral Meniere’s disease. This allows us to evaluate individual semicircular canal contribution to the control of balance and posture in human subjects. In this report, we demonstrate that electrical stimulation trains delivered to the perilymph of individual semicircular canals elicit postural responses specific to the particular canal stimulated, with some current spread to adjacent end organs. Modulation of stimulation current modulates the amplitude of the postural response. However, eye movements elicited by the same electrical stimuli were not consistent with postural responses in magnitude or direction in all subjects. Taken together, these findings support the feasibility of a vestibular prosthesis for the control of balance and illustrate new challenges for the development of this technology.
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Metadata
Title
Postural responses to electrical stimulation of the vestibular end organs in human subjects
Authors
Christopher Phillips
Christina DeFrancisci
Leo Ling
Kaibao Nie
Amy Nowack
James O. Phillips
Jay T. Rubinstein
Publication date
01-08-2013
Publisher
Springer Berlin Heidelberg
Published in
Experimental Brain Research / Issue 2/2013
Print ISSN: 0014-4819
Electronic ISSN: 1432-1106
DOI
https://doi.org/10.1007/s00221-013-3604-3

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