Spatial characterization of electric potentials generated by pulsed microelectrode arrays.

V Kandagor, C J Cela, C A Sanders,E Greenbaum,G Lazzi,M S Humayun, D M Zhou,R Castro, S Gaikwad, J Little

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference（2010）

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Abstract

This presentation is a report on the in situ characterization of stimulating microelectrodes in the context of multielectrode retinal prosthetic implants. The experimental system approximately replicates the geometric and electrical parameters of Second Sight Medical Products' Argus II Retinal Implant. Topographic maps of electric potentials have been prepared for a 60 electrode structure in which selected electrodes were stimulated with biphasic repetitively pulsed charge densities at 100 microC·cm(-2). Surface contour maps were prepared using a 10 microm diameter recording electrode.

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Key words

eye,pulsed microelectrode arrays,multielectrode retinal prosthetic implants,bioelectric potentials,surface contour maps,topographic maps,biomedical electrodes,second sight medical products,prosthetics,argus ii retinal implant,biphasic repetitively pulsed charge densities,electric potentials,electrode structure,microelectrodes,charge density,topographic map,visualization,electrodes,electric potential,metals,microelectrode array

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