Generating virtual channels in retinal prostheses

T.m. Choi, Shen Jen You

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Channel interaction generated by simultaneous electrical stimulation of neighboring electrodes is generally undesirable. However, channels interaction, or virtual channels, can be used in a controlled manner to increase the number of perceptible electrodes for retinal prosthesis patients. Virtual channels have been used successfully in the cochlear prosthesis systems to increase the number of perceptible channels or electrodes. In this paper, we analyze and study the condition for generating virtual channels in retinal prostheses. A finite element model of the retina with four electrodes was created. The conditions for generating virtual channels were studied by adjusting the ratio of the input voltage applied to neighboring electrodes. Experimental studies in cochlear prostheses show the existence and usefulness of virtual channels.

Original languageEnglish
Title of host publicationDigests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010
DOIs
StatePublished - 26 Jul 2010
Event14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC2010 - Chicago, IL, United States
Duration: 9 May 201012 May 2010

Publication series

NameDigests of the 2010 14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2010

Conference

Conference14th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC2010
CountryUnited States
CityChicago, IL
Period9/05/1012/05/10

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