Creating The Illusion Of A Different Body
Scientists have used tricks of the brain to change how people see themselves, even getting research subjects to accept a third arm as a "real" part of their bodies. Henrik Ehrsson, author of an article about the work in the journal PLoS One, discusses why.
Source: http://www.npr.org/2011/02/25/134059271/creating-the-illusion-of-a-different-body?ft=1&f=1007