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Experimental retina implants give mice infrared vision
A light-sensitive wire mesh implanted in the retina helps restore nerve impulses.
However, a team of scientists at China’s Fudan University has recently built prototype retinal implants that can replace the failing photoreceptors and potentially provide infrared vision as a bonus. Earlier work on retinal implants that restored at least some degree of vision to the blind involved using electrode arrays that electrically stimulated neurons in the back of the retina, taking the place of the damaged photoreceptor cells. The second, somewhat more complex task was designed to check if the implant enabled the mice to consciously perceive light—in other words, whether the visual stimuli were properly converted into signals in the right areas of their brains.
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