Yes, absolutely. I am convinced that there is an element of mass hypnosis in these congregations.
Have you ever seen someone go up to a faith healer/preacher and the preacher says "you are HEALED In the name of jaysus" and the person just falls over? It's called "being slain in the spirit" and it's happened to me. My knees just buckled and I couldn't stand up. You know why? Because I knew that was what was supposed to happen. I knew it was going to happen when I went up there, I'd seen it happen to other people, a whole room full of people were expecting it to happen, so it happened. I had no conscious control.
Same thing.