Alan M. Horsager,Robert J. Greenberg,Matthew J. McMahon
申请号：
US12484109
公开号：
US08626306B2
申请日:
2009.06.12
申请国别(地区):
US
年份:
2014
代理人:
摘要：
In a visual prosthesis or other neural stimulator it is advantageous to provide non-overlapping pulses in order to provide independent control of brightness from different electrodes. Non-overlapping pulses on geographically close electrodes avoid electric-field interaction which leads to brightness summation or changes in the shape and area of percepts. It is advantageous to apply pulses to nearby electrodes in a way that the currents do not overlap in time at all. The new finding is that even a small amount of separation in time results in a significant improvement with a time separation as small as 0.225 msec. ‘Nearby’ is defined as within a few millimeters of each other.
