Effective electrode configuration for selective stimulation with inner eye prostheses |
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Authors: | Rattay Frank Resatz Susanne |
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Affiliation: | Institute of Analysis and Scientific Computing, Vienna University of Technology, A-1040 Vienna, Austria. frank.rattay@tuwien.ac.at |
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Abstract: | The quality of visual perception with retinal prostheses strongly depends on the local selectivity. Electrode arrays at the surface of the retina should excite exclusively cells within a local area but they are expected to co-stimulate bypassing axons originating from ganglion cells of the outer regions. Long electrodes parallel to these axons are shown to be good candidates for avoiding the co-stimulation phenomenon. Efficiency of focal excitation depends on the length and resistance of the electrodes. |
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