Electric charge density distribution around simulation electrode in retinal implant

Author

Tanaka, S. ; Yagi, T. ; Kanda, H. ; Ito, Y. ; Watanabe, M. ; Uchikawa, Y.

Author_Institution

Dept. of Comput. Sci. & Eng., Nagoya Univ., Japan

Volume

4

fYear

1999

fDate

1999

Firstpage

386

Abstract

Electrical stimulation is an important issue in a visual prosthesis. In order to stimulate the nervous system economically, the electric field was analyzed by means of Poisson´s equation and the finite element method. Computer simulation has revealed that the magnitude of the electric field was the highest when the stimulation site was located at the same elevation of a substrate surface. When the electrode was located at the deeper than the substrate surface, the magnitude becomes smaller. Although further analysis is necessary, our present results suggest that a computational study is useful to determine the 3D configuration of an electrode array

Keywords

Poisson distribution; biomedical electrodes; electric fields; finite element analysis; medical computing; neurophysiology; prosthetics; vision defects; visual evoked potentials; Poisson equation; electric charge density distribution; electric field; electrical stimulation; finite element method; nervous system; retinal implant; simulation electrode; substrate surface; visual prosthesis; Blindness; Computational modeling; Electrodes; Implants; Indium tin oxide; Micromechanical devices; Nervous system; Retina; Visual prosthesis; Yagi-Uda antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man, and Cybernetics, 1999. IEEE SMC '99 Conference Proceedings. 1999 IEEE International Conference on

Conference_Location

Tokyo

ISSN

1062-922X

Print_ISBN

0-7803-5731-0

Type

conf

DOI

10.1109/ICSMC.1999.812433

Filename

812433