This undated photo provided by the journal Science shows an experiment in out-of-body experiences at the University College, London. Through the goggles, the volunteer is viewing the back of his body, as seen from the camera behind him. He is also watching a plastic rod moving toward a location just below the camera, while his real chest is simultaneously touched in the corresponding spot, confusing his senses with the sensation that he is observing himself from behind. (AP Photo/Courtesy of Henrik Ehrsson)