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Focused stimulation in a medical stimulation device
专利权人:
Cochlear Americas
发明人:
Honert, Chris van den
申请号:
AU2012213972
公开号:
AU2012213972A1
申请日:
2012.08.16
申请国别(地区):
AU
年份:
2012
代理人:
摘要:
#$%^&*AU2012213972A120120906.pdf#####ABSTRACT A iiedical stimulation device such as a cochlear implant configured to provide stimulation of one or more spatially-restricted contiguous portion(s) of the spiral array of auditory nerve fibers in the cochlear (discrete stimulation regions). Each discrete stimulation region is defined by the constructive and/or destructive interference of stimulating and limiting signals simultaneously applied to electrode chawmels of an implanted electrode array, the stimulating and limiting signals being determined based upon transimpedance measurements of intracochlear electrode channels of the implanted electrode array representing specific spread functions of an individual recipient. The stimulating signal is preferably applied through a targeted electrode channel that is, one or more successive electrodes which is/are adjacent to the discrete stimulation region. The targeted electrode channel is selected to represent sound based on the outputs of a sound processor to stimulate neural activity in the discrete stimulation region to thereby cause a percept of the represented sound. The size of the discrete stimulation region is defined by the limiting signal(s) applied to electrode channel(s) other than the targeted electrode channel, and which negate(s) current spread which would otherwise occur in response to the stimulating signal.
来源网站:
中国工程科技知识中心
来源网址:
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