Brain's body map remains stable after amputation

A surprising study found the brain's body map remains stable after amputation, contradicting decades of scientific belief. Researchers tracked three patients undergoing arm amputations, observing their brain activity before and after. The brain regions for the missing limb stayed intact, not taken over by neighboring body parts. This stability may explain phantom limb sensations and suggests therapies aimed at "fixing" the brain map are ineffective, pointing instead to nerve issues as the cause of pain.