Even Non-Amputees Can Feel a Phantom Limb
• livescience.comAmputees often suffer from a phenomenon known as phantom limb syndrome, but researchers now say that non-amputees can also be made to feel phantom limbs, and even pain, when knives are jabbed into nonexistent hands.
The scientists had previously found objects that did not resemble body parts, such as a block of wood, cannot be experienced as one's own hand, "so we were extremely surprised to find that the brain can accept an invisible hand as part of the body,"
I'm not surprised: I can feel my butt, but I need a mirror to see it.