I mean to keep everything short, but i've a lot to

Ramachandran also refers to phantom limb pain. A person who has undergone an amputation of an arm, for example, may experience a phantom limb in which the hand is permanently clenched, resulting in excruciatingly painful spasm.

In an attempt to alleviate the pain Ramachandran built a box containing a mirror which allowed a reflection of the remaining hand to appear as the missing hand. Instructing the patient to open and close her hand and to wiggle her fingers on both sides as she observed what appeared to be the missing hand resulted in a sensation of movement in the phantom limb and a relief from pain which was made permanent with practice.