Title :
A 100 channel neural stimulator for excitation of retinal ganglion cells
Author :
Suaning, Gregg J. ; Lovell, Nigel H.
Author_Institution :
Graduate Sch. of Biomed. Eng., New South Wales Univ., Sydney, NSW, Australia
fDate :
29 Oct-1 Nov 1998
Abstract :
A circuit capable of delivering stimuli to the surface of the retina by means of radio frequency (RF) data and power delivery thereby eliminating the need for wires or other invasive methods of transmission is described. The implanted circuit decodes transmitted data and sends a specific, charge balanced, biphasic, constant current stimulus to any one of 100 stimulating electrode sites placed upon the surface of the retina. Following the delivery of a given stimulus sequence, data which facilitates the determination of the retinal tissue impedance is transmitted to the external electronics via a telemetry facility
Keywords :
biomedical electrodes; biomedical electronics; biomedical telemetry; cellular biophysics; eye; neurophysiology; prosthetics; sensory aids; 100 channel neural stimulator; external electronics; implanted circuit; invasive transmission methods; power delivery; radio frequency data; retinal ganglion cells excitation; retinal tissue impedance; stimulating electrode sites; stimulus sequence; telemetry facility; transmitted data decoding; visual prosthesis; Biomedical engineering; Blindness; Circuits; Decoding; Electrodes; Psychology; Radio frequency; Retina; Visual prosthesis; Wires;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.747056
