population go into a trance. 15% go into a deep trance. 15% are resistent. even though some people are resistent they still get the benefits of hypnosis. jenna: say it works for one of your patients, how long will it work? how long will it affect their behavior? >> in this particular study i mentioned it had a significant effect seven years after the treatment was stopped. people go into a specific protocol. they might do six to eight treatments. then what we'll do we'll monitor them. if they need additional tune-ups we'll put them in for a tune-up. i think one of the things so interesting about hypnosis now we actually have the research showing that it works. in pet scans and mris that look at hypnosis we've been able to look at the right and left side of the brain and what we find people under hypnosis are fully aware not only what they're doing, it is not that they're not aware, they're fully aware but able to