科研之友
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摘要
More recent studies show that electrical micro-stimulation of the retina or cortex produces visual sensations in blinds subjects. However, with current electrode array technologies, it is nearly impossible to cover entire visual field by electrically stimulating the retina or visual cortex. In the visual pathway, by stimulating optic nerve, the entire visual filed is represented in such a relatively small area. According to physiological experiment results, we design a kind of implantable neural stimulator based on stimulating optic nerve to generate visual perception. The control circuit is designed to control 64 electrodes, offer single pulse or multiple pulses sequence which are variable range such as from 1μA to 2.048 mA current amplitudes, from 21μs to 400 μs duration, from 0 to 350Hz frequency.
- 出版日期2007
- 单位上海交通大学
