Friday, January 02, 2009

V.S. Ramachandran on self awareness

From SELF AWARENESS: THE LAST FRONTIER:
"• Even odder is a phenomenon called "The telephone syndrome". The patient (I'll call him John) will display akinetic mutism—no visual consciousness—when seeing his (say) father in person. But if he receives a phone call from his father he suddenly becomes conscious and starts conversing with him normally. (S. Sriram and Orrin Devinsky, personal communication.) It's as if there are two Johns—the visual John who is only partially conscious and the auditory John (with his own self) who talks over the phone. This implies a degree of segregation of selves—all the way from sensory areas to motor output—that no one would have suspected.

We will now consider two aspects of self that are considered almost axiomatic. First its essentially private nature. You can empathise with someone but never to the point of experiencing her sensations or dissolving into her (except in pathological states like folie a duex and romantic love). Second, it is aware of its own existence. A self that negates itself is an oxymoron. Yet both these axioms can fall apart in disease; without affecting other aspects of self. An amputee can literally feel his phantom limb being touched when he merely watches a normal person being touched. A person with Cotard's syndrome will deny that he exists; claiming that his body is a mere empty shell. Explaining these disorders in neural terms can help illuminate how the normal self is constructed.

To account for some of these syndromes we need to invoke mirror neurons discovered by Giacomo Rizzolatti, Victorio Gallase and Marco Iacoboni."
The thesis seems to be that the problem of self can be studied empirically and mirror neurons "could be the neural basis of introspection, and of the reciprocity of self awareness and other awareness."
Readable essay and there is a discussion at the end with Marc Hauser.

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