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Proceedings Paper

Optical nerve stimulation for a vestibular prosthesis
Author(s): David M. Harris; Steven M. Bierer; Jonathon D. Wells; James O. Phillips
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Paper Abstract

Infrared Nerve Stimulation (INS) offers several advantages over electrical stimulation, including more precise spatial selectivity and improved surgical access. In this study, INS and electrical stimulation were compared in their ability to activate the vestibular branch of the VIIIth nerve, as a potential way to treat balance disorders. The superior and lateral canals of the vestibular system of Guinea pigs were identified and approached with the aid of precise 3-D reconstructions. A monopolar platinum stimulating electrode was positioned near the ampullae of the canals, and biphasic current pulses were used to stimulate vestibular evoked potentials and eye movements. Thresholds and input/output functions were measured for various stimulus conditions. A short pulsed diode laser (Capella, Lockheed Martin-Aculight, Inc., Bothell WA) was placed in the same anatomical position and various stimulus conditions were evaluated in their ability to evoke similar potentials and eye movements.

Paper Details

Date Published: 23 February 2009
PDF: 7 pages
Proc. SPIE 7180, Photons and Neurons, 71800R (23 February 2009); doi: 10.1117/12.810197
Show Author Affiliations
David M. Harris, Univ. of Washington (United States)
Steven M. Bierer, Univ. of Washington (United States)
Jonathon D. Wells, Lockheed Martin Aculight (United States)
James O. Phillips, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 7180:
Photons and Neurons
Anita Mahadevan-Jansen; E. Duco Jansen, Editor(s)

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