As an SF writer I find the idea of an amputee's phantom limb fascinating fodder for the imagination. As a human being I feel bad for the amputees! What can be done to cure intense discomfort in an area of your body that does not exist anymore?.
Graphics technology may have found an answer. This CRAVE article describes how a virtual reality system using video game graphics helped a woman experience the use of her fingers again and find relief from the her painfully clenched missing hand. Participants in the program get nifty virtual reality goggles and enter into an absorbing virtual reality where they can wiggle non-existant fingers and run with legs that have magically come back to them.
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