Acknowledgment:
Part of the work described here was funded by the Swiss National Science Foundation (grant no. 3100-67168.01). This essay is a condensation of several recent publications by the author, focusing on phantoms of congenitally absent limbs (Brugger and Funk, 2005), supernumerary phantoms (Brugger, 2003), hemiphantoms and phantoms of one’s entire body (Brugger, in press), respectively.…