Spatial characterization of electric potentials generated by pulsed microelectrode arrays

Author

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

Author_Institution

Dept. of Mater. Sci. & Eng., Univ. of Tennessee, Knoxville, TN, USA

fYear

2010

fDate

Aug. 31 2010-Sept. 4 2010

Firstpage

6243

Lastpage

6246

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 μC·cm^-2. Surface contour maps were prepared using a 10 μm diameter recording electrode.

Keywords

bioelectric potentials; biomedical electrodes; eye; microelectrodes; prosthetics; Argus II Retinal Implant; Second Sight Medical Products; biphasic repetitively pulsed charge densities; electric potentials; electrode structure; multielectrode retinal prosthetic implants; pulsed microelectrode arrays; surface contour maps; topographic maps; Electric potential; Electrodes; Implants; Metals; Prosthetics; Retina; Visualization; Electric Stimulation; Humans; Membrane Potentials; Microelectrodes; Static Electricity;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE

Conference_Location

Buenos Aires

ISSN

1557-170X

Print_ISBN

978-1-4244-4123-5

Type

conf

DOI

10.1109/IEMBS.2010.5628058

Filename

5628058