Visual resolution with retinal implants estimated from recordings in cat visual cortex

DOI to cite this document:: 10.5283/epub.1933

Eckhorn, Reinhard ; Wilms, Marcus

; Schanze, Thomas ; Eger, Marcus ; Hesse, Lutz ; Eysel, Ulf T.

; Kisvárday, Zoltán F. ; Zrenner, Eberhart ; Gekeler, Florian ; Schwahn, Helmut ; Shinoda, Keisuke ; Sachs, Helmut ; Walter, Peter

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Date of publication of this fulltext: 05 Aug 2009 13:34

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Abstract

We investigated cortical responses to electrical stimulation of the retina using epi- and sub-retinal electrodes of 20-100 mu m diameter. Temporal and spatial resolutions were assessed by recordings from the visual cortex with arrays of microelectrodes and optical imaging. The estimated resolutions were similar to 40 ms and similar to 1 degrees of visual angle. This temporal resolution of 25 ...