The Spirit Within

Out-of-body experiences may be caused by arousal system disturbances in brain:

"Out-of-body experiences may be caused by arousal system disturbances in brain Discussion at PhysOrgForum

Having an out-of-body experience may seem far-fetched to some, but for those with arousal system disturbances in their brains, it may not be a far off idea that they could sense they were really outside their own body watching themselves. In previous studies of more than 13,000 Europeans, almost 6 percent said they have had such an out-of-body experience."