Spooks generated by brain-body mismatch
The results show that not all types of spookiness emerge in the same way from the brain. “They show that the neural networks involved in the feeling of a presence are not the same as those involved in out-of-body experiences or in seeing a doppelgänger,” says the lead author of the study, cognitive neuroscientist Olaf Blanke of the Swiss Federal Institute of Technology of Lausanne (EPFL).
http://www.nature.com/news/spooks-generated-by-brain-body-mismatch–1.16294