Microelectronic retinal prosthesis: I. A neurostimulator for the concurrent activation of multiple electrodes

Y. T. Wong, N. Dommel, P. J. Preston, T. Lehmann, N. H. Lovell, G. J. Suaning

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

4 Citations (Scopus)

Abstract

An application specific integrated circuit (ASIC) capable of delivering charge to multiple electrodes in unison has been developed. The ASIC is designed to function as part of an epi-retinal prosthesis driving an array of electrodes in a hexagonal mosaic. This unique organization of electrodes and the use of current sources and sinks is implemented to reduce the electrical cross-talk that occurs when many electrodes are activated in unison. Due to the large numbers of electrodes needed to provide useful vision to implantees, the interleaving strategies used in cochlear implants will not suffice for a vision prosthesis, where the "frame rate" is important for acceptable perceptual outcomes. This paper describes the design, and architectural approaches and performance testing of the developed ASIC.

Original languageEnglish
Title of host publication28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
Pages4647-4650
Number of pages4
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventInternational Conference of the IEEE Engineering in Medicine and Biology Society 2006 - Marriott Hotel, New York, United States of America
Duration: 31 Aug 20063 Sep 2006
Conference number: 28th

Conference

ConferenceInternational Conference of the IEEE Engineering in Medicine and Biology Society 2006
Abbreviated titleEMBC 2006
CountryUnited States of America
CityNew York
Period31/08/063/09/06
OtherInternational Conference of the IEEE Engineering in Medicine and Biology Society

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