A Finnish study demonstrates that patterns of brain activity are very different when a subject is hypnotized than when the same subject is awake. Centers of activity in the brain act more independently of one another under hypnosis, and that may be what enables the subject to experience sensations that are not possible when awake.
Of course, saying that brain patterns differ is a far cry from saying that one can manipulate actual behavior. But it’s a start.
Actually it’s more than a start. Monitoring brain waves may be the proof that someone is in a hypnotized state.
- Jarno Tuominen, Sakari Kallio, Valtteri Kaasinen, Henry Railo. Segregated brain state during hypnosis. Neuroscience of Consciousness, 2021; 2021 (1) DOI: 10.1093/nc/niab002
- University of Turku. “Hypnosis changes the way our brain processes information.” ScienceDaily. ScienceDaily, 26 March 2021. www.sciencedaily.com/releases/2021/03/210326122743.htm