The design and testing of an epi-retinal vision prosthesis neurostimulator capable of concurrent parallel stimulation

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

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

9 Citations (Scopus)


An application specific integrated circuit (ASIC) neurostimulator capable of stimulating multiple electrodes in unison has been designed and tested. The ASIC utilizes multiple matched current sinks and sources to provide localized stimulation and is designed to drive electrodes organized in a hexagonal mosaic. This organization allows each stimulating electrode to be surrounded by up to six return electrodes, effectively isolating each stimulation site. The ASIC was manufactured using a high-voltage complementary metal-oxide-semiconductor process, which allows up to 20V to be applied across the circuitry. This provides the greatest versatility for testing with electrodes and tissues of varying impedances in-situ and allows the device to be used in other neurostimulation applications such as functional electrical stimulation. The design has been thoroughly tested and meets all the design specifications.

Original languageEnglish
Title of host publication28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
Number of pages10
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 (Proceedings)


ConferenceInternational Conference of the IEEE Engineering in Medicine and Biology Society 2006
Abbreviated titleEMBC 2006
Country/TerritoryUnited States of America
CityNew York
Internet address

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