Mystery Solved: The Source Of Pain In "Phantom" Limbs
One of the great medical mysteries is the source of phantom-limb syndrome. Doctors have been puzzled for centuries by patients who, after losing an arm or a leg, continue to feel sensation--and even excruciating pain--in the lost limb. For some time, neuroscientists have suspected that the pain was a side effect of the brain's attempts to reorganize itself following a major disruption in sensory input. But researchers at Vanderbilt University in Nashville report the surprising discovery that this reorganization is causing significant growth of new brain cells in amputees.
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