Spatial Restriction of Neural Activation Using Focused Multipolar Stimulation With a Retinal Prosthesis | Zendy

Thomas C. Spencer | Zendy; James B. Fallon | Zendy; Patrick C. Thien | Zendy; Mohit N. Shivdasani | Zendy

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Spatial Restriction of Neural Activation Using Focused Multipolar Stimulation With a Retinal Prosthesis

Author(s) -

Thomas C. Spencer,

James B. Fallon,

Patrick C. Thien,

Mohit N. Shivdasani

Publication year - 2016

Publication title -

investigative ophthalmology and visual science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.935

H-Index - 218

eISSN - 1552-5783

pISSN - 0146-0404

DOI - 10.1167/iovs.16-19325

Subject(s) - phosphene , stimulation , visual prosthesis , retinal , retina , electrode array , neuroscience , retinal implant , visual cortex , multielectrode array , neural prosthesis , electrode , chemistry , biomedical engineering , ophthalmology , medicine , microelectrode , psychology , transcranial magnetic stimulation

The resolution provided by present state-of-the-art retinal prostheses is severely limiting for recipients, partly due to the broad spread of activation in the retina in response to monopolar (MP) electrical stimulation. Focused multipolar (FMP) stimulation has been shown to restrict neural activation in the cochlea compared to MP stimulation. We extended the FMP stimulation technique to a two-dimensional electrode array and compared its efficacy to MP and hexapolar (HP) stimulation in the retina.

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