Out of Body Experience (OBE)
An out-of-body experience (OBE or sometimes OOBE) is a phenomenon in which a person perceives the world from a location outside their physical body. An OBE is a form of autoscopy (literally “seeing self”), although this term is more commonly used to refer to the pathological condition of seeing a second self, or doppelgänger.
The term out-of-body experience was introduced in 1943 by G. N. M. Tyrrell in his book Apparitions,[1] and was adopted by researchers such as Celia Green,[2] and Robert Monroe,[3] as an alternative to belief-centric labels such as “astral projection” or “spirit walking”. OBEs can be induced by traumatic brain injuries, sensory deprivation, near-death experiences, dissociative and psychedelic drugs, dehydration, sleep disorders, dreaming, and electrical stimulation of the brain,[4] among other causes. It can also be deliberately induced by some.[5] One in ten people has an OBE once, or more commonly, several times in their life.[6][7]
Psychologists and neuroscientists regard OBEs as dissociative experiences occurring along different psychological and neurological factors.[5][8][9][10][11][12][13][14]