title: Effective electrode configuration for selective stimulation with inner eye prostheses.
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.
authors.affiliation: Institute of Analysis and Scientific Computing, Vienna University of Technology, A-1040 Vienna, Austria. frank.rattay@tuwien.ac.at
authors.forename: Frank
authors.initials: F
authors.lastname: Rattay
authors.forename: Susanne
authors.initials: S
authors.lastname: Resatz
mesh_terms: D000200:Action Potentials / Q000502:physiology; D000818:Animals; D001369:Axons / Q000502:physiology; D001766:Blindness / Q000534:rehabilitation*; D017076:Computer-Aided Design; D004558:Electric Stimulation / Q000295:instrumentation* / Q000379:methods; D004599:Electric Stimulation Therapy / Q000295:instrumentation* / Q000379:methods; D004567:Electrodes, Implanted; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods*; D005137:Eye, Artificial; D006801:Humans; D008839:Microelectrodes; D008959:Models, Neurological; D015203:Reproducibility of Results; D012165:Retinal Ganglion Cells / Q000502:physiology*; D012680:Sensitivity and Specificity; D014562:Caudata