The Art of Scientifically Measuring Trance
Given how elusive, abstract and even subjective hypnosis is, you would be right to think you cannot measure it.You can't point to any a part of the brain and say that is the trance lobe, just provides it a tickle. And you would not be ready to see it in action within the brain. Except... you kinda can. When you go from your normal waking state to a trance , your brain changes in drastic ways.
Even within the moment.
Hypnosis can get pretty intense. Blood flows faraway from the prefrontal cortex, which explains the dreamlike quality is usually has.