Chunhong Zhou,Avraham I. Caspi,Kelly H. McClure,Matthew J. McMahon,Arup Roy,Robert J. Greenberg
申请号：
US12562022
公开号：
US09089701B2
申请日:
2009.09.17
申请国别(地区):
US
年份:
2015
代理人:
摘要：
Techniques and functional electrical stimulation to eliminate discomfort during electrical stimulation of the retina are provided. According to a first technique, discomfort is eliminated through control of timing group assignment. According to a second technique, discomfort is eliminated through an edge detection method. According to a third technique, brightness clipping is used to eliminate discomfort. According to a fourth technique, direct reduction of current is obtained by scaling it down by a factor which is dependent on the sum of current in all electrodes. According to a fifth technique, the current being fed to each electrode is adjusted, by dividing it by a weighted sum of currents fed to the surrounding electrodes. According to a sixth technique, a method based on the current summation effect is used. According to a seventh technique, a large return electrode is used. According to an eighth technique, the return electrode is used for a pseudo-multi-polar stimulation.
