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How being deaf can enhance sight

Hearing-specialized brain regions adapt to visual input

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1:20pm, October 10, 2010

Some deaf people have extraordinarily keen vision, and a new study of cats may explain why. The results, published online October 12 in Nature Neuroscience, show how parts of the brain normally dedicated to a sense that has been lost can pitch in to augment another type of input.  

For years, researchers have known that deaf people often have superior peripheral vision and motion detection, but just how the brain creates these advantages was unclear. “Over the years, we’ve speculated about how these changes might be taking place,” says neuroscientist Helen Neville of the University of Oregon in Eugene, but a clear cause has been elusive.  

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