by OMGWTFBBQ » August 17th, 2008, 4:14 pm
Anything which psychology can change physically can be change via hypnosis.
Example, level of stress. Has physical manifestations. Can be reduced through hypnosis.
Relflexes to pain. Can be nullified by hypnosis, a la anaesthetic. Recently the NHS in the UK has started experimentally allowing surgery to be performed without chemical anaethetic, rather using hypontic trance. Of course the patient was regularly hynotised by his therapist, and so was able to trance deep easily.
Any reaction to sensation, essentially. Someone cold can be made to sweat in hypnosis, and someone hot can be made to shiver. Orgasms can be induced. I'd assume vomiting and other physical reflexes would also be able to be induced, though I can't imagine why.
However, anything can be hallucinated, with enough hypnosis. So physical changes can be hallucinated, and in that state, for all intents and purposes, they're real physical changes. The mind does this while dreaming and can be tricked into doing the same while awake.