Scientists Induce Out-of-Body Sensation
Monday, August 27, 2007
Usually these sensory streams, which include vision, touch, balance and the sense of where one’s body is positioned in space, work together seamlessly, Prof. Botvinick said. But when the information coming from the sensory sources does not match up, when they are thrown out of synchrony, the sense of being embodied as a whole comes apart.
The brain, which abhors ambiguity, then forces a decision that can, as the new experiments show, involve the sense of being in a different body.
Could you just imagine how weird it would be? Friends of mine and I have played a trick like this on each other before and it's truly a weird experience when the brain tricks itself into thinking the rubber hand is your hand.
In that illusion, people hide one hand in their lap and look at a rubber hand set on a table in front of them. As a researcher strokes the real hand and the rubber hand simultaneously with a stick, people have the vivid sense that the rubber hand is their own.
When the rubber hand is whacked with a hammer, people wince and sometimes cry out.
The illusion shows that body parts can be separated from the whole body by manipulating a mismatch between touch and vision. That is, when a person’s brain sees the fake hand being stroked and feels the same sensation, the sense of being touched is misattributed to the fake.
(via onegoodmove)
Update
The Evolutionary Middleman has a good article up about many experiments with consciousness.
Monday, August 27, 2007 at 5:39:00 PM CDT
I keep meaning to post about this story and some interesting related ones, but keep getting side-tracked. Thanks for keeping it alive.
For those that keep saying that science can NEVER answer the question of consciousness, all I can say is - keep watching!
More and more questions do get answered every year with new research. We may never have ALL the answers, but we can certainly get a very good fix on the general natural process of sentience in much the same way as we don't have ALL the answers on how evolution works, but we have more than enough to show that it DOES.
Tuesday, August 28, 2007 at 2:16:00 AM CDT
You inspired me!
My post on this subject
Wednesday, August 29, 2007 at 3:48:00 AM CDT
I was thinking of posting about this very subject as I found this very very interesting! Science has the answer, always.
Wednesday, August 29, 2007 at 9:01:00 PM CDT
That is very interesting and would be fun to try!