Multichannel cortical stimulation for restoration of vision

Author

Troyk, P.R. ; Agnew, W. ; Bak, M. ; Berg, J. ; Bradley, D. ; Bullara, L. ; Cogan, S. ; Erickson, R. ; Kufta, C. ; McCreery, D. ; Schmidt, E. ; Towle, V.

Author_Institution

Pritzker Inst. of Med. Eng., Illinois Inst. of Technol., Chicago, IL, USA

Volume

3

fYear

2002

fDate

23-26 Oct. 2002

Firstpage

2045

Abstract

Development of an intracortical visual prosthesis for restoration of vision, has been, and continues to be an elusive goal of neural prosthesis researchers. Our multi-institutional team has tested the feasibility of implanting and evaluating large numbers of stimulation/recording electrodes in an animal model. Using a combination of 8-electrode arrays and individual electrodes, 152 activated iridium microelectrodes were implanted in area V1 of a macaque. Visual stimuli were used to define a retinotopic map. Spatial coordinates for each electrode were used to train the animal to use electrical stimulation in performing a visual psychophysical task.

Keywords

biomedical electrodes; brain; microelectrodes; neurophysiology; prosthetics; 8-electrode arrays; Ir; activated iridium microelectrodes; animal model; animal training; area V1; cortical microelectrodes; macaque; multiinstitutional team; retinotopic map; visual prosthesis; visual psychophysical task; Animals; Biomedical electrodes; Cables; Connectors; Electrical stimulation; Microelectrodes; Skull; Surgery; Testing; Visual prosthesis;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint

ISSN

1094-687X

Print_ISBN

0-7803-7612-9

Type

conf

DOI

10.1109/IEMBS.2002.1053159

Filename

1053159