Do you know what was done/said to you?
No. I went up on stage, sat down in a chair and closed my eyes. Dr. Bandler started talking and I remember him saying something like, "Oh I love it when they fight me." and that's the last thing I remember. There was the dark pink/grey light you see when your eyes are closed and then I was "waking up" and stepping off the stage. I hadn't been asleep but I did not consciously remember anything.
It was only later, during a break, when someone told me that it had been several minutes, and that I had flushed dramatically and had other reactions during the process. I have no memory of any of that. From my POV it was just a few moments.
There may even be video available of the seminar. I don't remember the year but it was maybe 2004, the seminar was a week long and in Chicago, and I think it was technically DHE (Design Human Engineering), not NLP, if you want to try to track down the actual incident.
After my depression was cured I kinda lost interest in NLP.
I attended a seminar given by Dr. Bandler about fifteen years ago and volunteered for an on-stage demonstration (of hypnosis and some other techniques). I don't remember much, and my subjective sense was that I was up there for only a few moments, but I was told by a friend afterwards that it was several minutes. During that time, whatever he did, I was relieved of a severe depression that had ruined my life up to that point. Let me be clear: I had suffered from years of vicious depression that kept me from living a normal life. It went away and never came back.