Conference Proceedings
Simulating electrical stimulation of degenerative retinal ganglion cells with bi-phasic pulse trains
T Kameneva, DB Grayden, H Meffin, AN Burkitt
Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society EMBS | Published : 2011
Abstract
The aim of this work was to investigate how retinal ganglion cells (RGCs) respond to repetitive electrical stimulation in degenerative retina. The response of modeled ON and OFF cells was examined to bi-phasic pulse train stimulation of varying frequencies. Previously developed models of RGCs were extended to include an experimentally observable balance of excitatory and inhibitory currents in degenerative retina. The phenomena of fading and dark phosphenes with retinal implants were investigated. A hypothesis for a mechanism contributing to these phenomena was formulated. © 2011 IEEE.