Optical nerve stimulation for a vestibular prosthesis

David M. Harris; Steven M. Bierer; Jonathon D. Wells; James O. Phillips

doi:10.1117/12.810197

23 February 2009 Optical nerve stimulation for a vestibular prosthesis

David M. Harris, Steven M. Bierer, Jonathon D. Wells, James O. Phillips

Proceedings Volume 7180, Photons and Neurons; 71800R (2009) https://doi.org/10.1117/12.810197
Event: SPIE BiOS, 2009, San Jose, California, United States

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 VIII^th 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.

Citation Download Citation

David M. Harris, Steven M. Bierer, Jonathon D. Wells, and James O. Phillips "Optical nerve stimulation for a vestibular prosthesis", Proc. SPIE 7180, Photons and Neurons, 71800R (23 February 2009); https://doi.org/10.1117/12.810197

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