Sunday, November 4, 2007

Out-of-Body Experiences Aren't as Far Out as You Think.

Hey All! I've been neglecting my blog for the sake of science, but never fear, I've found loads of really intriguing things to share with you!

Today's tasty tidbit comes to us from radio WNYC's podcast show "Radio Lab", a show that investigates a wide assortment of cutting-edge and curious topics in science. Their podcast is available in iTunes.

During their "Where Am I?" issue on body image, Jad Abumrad and Robert Krulwich explore the relationship between brains and bodies and how they can get way out of synch. Here's just one item from their show.

In the summer of 1952 the pilots-in-training at Luke Airforce Base suffered 9 fatal accidents during routine training exercises. Another pilot from the same training group reported that once, during a training exercise he felt as though he was sitting on the wing of his plane watching someone (actually himself) fly the plane. Eventually he realized that he was watching himself and resumed conscious control of the plane.

They called in Jim Whinnery, Chief Flight Surgeon and Chief Aeromedical Scientist at the Naval Air Warfare Center. He decided to put volunteer pilots in a centrifuge (the whirling mechanisms used to train astronauts) that had been set up to feel and work like a cockpit and see if OOBs can be induced. The body goes through a specific sequence as the centrifuge gains speed: first the blood is pulled from the brain, and you experience 'gray-out' vision, followed by tunnel vision, black-out, and, if you take it far enough, you lose consciousness. When the pilots come to they are very disoriented, they don't know who or where they are or what they're supposed to be doing. Then it all comes back to them in a rush.

Whinnery tested around 500 pilots in 15 years and recorded their experiences. He noted that the average black-out lasted 12-24 seconds. During black-outs pilots experienced strange visions, so of which included OOBs. Whinnery thinks that the visions happen when the brain loses communication with the body. The visions are the brains way of explaining its sensory experience to itself.

Of the 500, 40 had OOBs. Of that 40, a small subgroup had visions of a tunnel with white light. They were the ones with the most intense black-outs.

As far as I'm concerned, this discovery poses way more questions than it answers. Any thoughts?