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Eyes See Trouble Coming Before Brain Notices Monday, September 07, 2009 - Ehud Rattner Home >> Headlines >> Biology   
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Not just a window to the soul, the eye has a few tricks of its own. Newly discovered eye cells can warn us that an object is coming nearer, and do so without the brain's help. This ability may have evolved to speed escape from predators. Neurons that fire in response to horizontal and vertical movements had already been found in the retinas of mammals, but the only cells known to be sensitive to approaching objects were in the brain. (source: newscientist.com)
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