Samip Shah,Amy Chu Peishuan Hines,Dao Min Zhou,Robert J. Greenberg,Mark S. Humayun,James D. Weiland
申请号：
US13179186
公开号：
US08239036B2
申请日:
2011.07.08
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A critical element of a retinal prosthesis is the stimulating electrode array, which is placed in close proximity to the retina. It is via this interface that a retinal prosthesis electrically stimulates nerve cells to produce the perception of light. The impedance load seen by the current driver consists of the tissue resistance and the complex electrode impedance. The results show that the tissue resistance of the retina is significantly greater than that of the vitreous humor in the eye. Circuit models of the electrode-retina interface are used to parameterize the different contributors to the overall impedance.
