The Human Truth Foundation

Out of Body Experiences (OBEs)
Astral Projection or Soul Travelling?

By Vexen Crabtree 2016


#beliefs #delusion #epistemology #experiences #god #illusion #new_age #OBE #religion #subjectivism #supernatural #switzerland #USA

Out-of-body experiences (OBEs) describe a feeling that, while unconscious or semi-conscious, a person's spirit floats above their own body and perhaps even explores distance places. It then returns to its owner's body whereupon they awake. There is a particular trend to report this after near-death experiences or during drug use1. In Europe, 5.8% answered a poll to say that they'd had an out-of-body experience (OBE) and a similar rate was found amongst those in the USA2. Those who state they have a magical ability to do this wilfully often call it "astral projection", "soul travelling"3 or "spirit walking", and such claims are common in some New Age communities. But what causes OBEs? There are many neurological and physiological causes of odd experiences in our lives. These range from ordinary tricks of the eye4 through to repeated minor epileptic fits that cause nothing more than visual (or aural) hallucinations combined with emotional cues. Many supernatural experiences can be artificially induced through neural electro-stimulation, proving their mundane basis5. Strange and unusual experiences often give rise to strange and unusual beliefs6,7 especially for those people are not inclined towards finding natural explanations for events.8

Historically OBEs were poorly studied because of their purely psychological nature; but recent technological developments have allowed neurologists to examine our states of mind much more closely, although neurological and physiological causes of OBEs have been suggested for a long time9. Dr Olaf and colleagues in Switzerland have identified the physical places in the brain where such experiences are generated2. We have found that a temporary reduction in blood or oxygen (including excess carbon dioxide in the blood) can induce out-of-body experiences "which may explain the prevalence of these sensations during accidents, emergencies, heart attacks, etc"10. Not only that, but we have been able to artificially create situations in which OBEs occur in wide-awake individuals11. Biological explanations aside, investigators have done things like placed symbols high-up in rooms (on cabinets, etc) where the patient cannot see them. Those experiencing OBEs have never seen those symbols, and sceptics who have comprehensively reviewed such experiments report that the patients only ever see what they already knew was there. In other words, it is the brain tricking the patient into thinking they are having an OBE, when in reality it is only a subjective, internal event. This, combined with our neurological understanding of OBEs is definitive proof that there is nothing supernatural occurring. As physicist Prof Stenger says, there is "no evidence for anything happening outside of the physical processes of the brain"12, a conclusion also reached by neurologist Dr Bruger11.

Supporting notes:

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One of [Dr. Olaf Blanke's] patients was a forty-three-year-old woman [and as] electrodes stimulated the area between the parietal and temporal lobes, she immediately had the sensation of leaving her body. [...] When the electrodes were turned off, however, the out-of-body sensation disappeared immediately. In fact, Dr. Blanke found that he could turn the out-of-body sensation on and off, like a light switch, by repeatedly stimulating this area of the brain.

"The Future of the Mind" by Michio Kaku (2014)13

Two sets of studies published independently in the same issue of the journal Science demonstrate how the illusion of a bodily self outside one's own body can be stimulated in the laboratory. The studies forge ways to better understand both out-of-body and near-death experiences. "The research provides a physical explanation for the phenomenon usually ascribed to otherworldly influences," Peter Bruger, a neurologist at University Hospital in Zurich who was not involved in the experiment, told science journalist Sandra Blakesee in her report on these experiments in The New York Times (August 24).

Kendrick Frazier (2007)11

Olaf Blanke and his colleagues report that they are able to bring about so-called out-of-body experiences (OBE), where a person's consciousness seems to become detached from the body, by electrical stimulation of a specific region in the brain. I have discussed OBE experiments in two books and have concluded that they provide no evidence for anything happening outside of the physical processes of the brain.

"God, the Failed Hypothesis: How Science Shows That God Does Not Exist" by Prof. Victor J. Stenger (2007)14

Two relevant books by Prof. Victor Stenger are:

  1. Physics and Psychics: The Search for a World beyond the Senses (Amherst, NY: Prometheus Books, 1990) (especially p111), and
  2. Has Science Found God? The Latest Results in the Search for Purpose in the Universe (Amherst, NY: Prometheus Books, 2003) pages 290-99.

Current edition: 2016 Apr 12
Parent page: Souls do not Exist: Evidence from Science & Philosophy Against Mind-Body Dualism

All #tags used on this page - click for more:

#beliefs #delusion #epistemology #experiences #god #illusion #new_age #OBE #religion #subjectivism #supernatural #switzerland #USA

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References: (What's this?)

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Skeptical Inquirer magazine. Published by Committee for Skeptical Inquiry, NY, USA. Pro-science magazine published bimonthly.

Boyer, Pascal
(2001) Religion Explained. Published by William Heinemann, Random House Group Ltd, London, UK. A hardback book.

Carroll, Robert Todd. (1945-2016). Taught philosophy at Sacramento City College from 1977 until retirement in 2007. Created The Skeptic's Dictionary in 1994.
(2003) The Skeptic's Dictionary. Published by John Wiley & Sons, New Jersey, USA.
(2011) Unnatural Acts: Critical Thinking, Skepticism, and Science Exposed!. Amazon Kindle digital edition. Published by the James Randi Educational Foundation. An e-book.

Crabtree, Vexen
(1999) "Emotions Are Biological: How Biochemistry and Neurology Account for Feelings" (1999). Accessed 2019 Jan 14.
(2005) "Nightmares and Night Terrors" (2005). Accessed 2019 Jan 14.
(2008) "The False and Conflicting Experiences of Mankind: How Other Peoples' Experience Contradict Our Own Beliefs" (2008). Accessed 2019 Jan 14.

Gabbard & Twemlow
(1984) By G.O. Gabbard and A.W. Twemlow. "With the Eyes of the Mind: An Empirical Analysis of Out-of-body States". Published by Praeger Scientific, New York, USA.

Kaku, Michio. Professor of theoretical physics.
(2014) The Future of the Mind. Subtitled: "The Scientific Quest To Understand, Enhance and Empower the Mind". Amazon Kindle digital edition. Published by Penguin Books Ltd, London, UK. An e-book.

Paine, Thomas
(1807) The Age of Reason. Published by Musiaicum Books. Part 1 published 1794, part 2 in 1795 and part 3 in 1807. An e-book.

Stenger, Prof. Victor J.
(2007) God, the Failed Hypothesis: How Science Shows That God Does Not Exist. Published by Prometheus Books, NY, USA. Stenger is a Nobel-prize winning physicist, and a skeptical philosopher whose research is strictly rational and evidence-based.


  1. Carroll (2003). p270.^
  2. Kaku (2014). Chapter 12, "The Future: Mind Beyond Matter", digital location 4468-4495.^
  3. One entire religion bases its premise on its interpretations of OBEs: Eckankar: The Religion of the Light and Sound of God, The Ancient Science of Soul Travel.^
  4. BBC News (2000 Sep 11) accessed 2000 Sep 14.^
  5. Carroll (2011). Chapter 3 "Believing is Seeing: Trust No One, Not Even Yourself" p47.^
  6. Boyer (2001). Chapter 1 "What is the Origin?" p6-7. Pascal states that one of the appeals of religion, according to many, is that 'Religion explains puzzling experience: dreams, prescience, etc'.^
  7. Paine, Thomas (1807). Digital location 802.^
  8. These few sentences are taken from "The False and Conflicting Experiences of Mankind: How Other Peoples' Experience Contradict Our Own Beliefs" by Vexen Crabtree (2008).^
  9. Gabbard & Twemlow (1984)^
  10. Kaku (2014). Chapter 12 "The Future" digital location 4468-4495.^
  11. Kendrick Frazier in Skeptical Inquirer (2007 Nov/Dec) article "Out of Body and in the Lab: New Experiments Stimulate Seeing Self Elsewhere" p5-6.^
  12. Stenger (2007). p84.^
  13. Kaku (2014). Chapter 12, "The Future: Mind Beyond Matter", digital location 4472-4478.^
  14. Stenger (2007). p83.^

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