The following links provide articles and research material related to the application and effectiveness of hypnosis and hypnotherapy.

EEG technology now allows us to record brainwave activity during hypnosis. You can see here several snapshots of brainwave activity whilst experiencing various hypnotic phenomena.

The Efficacy of Hypnosis as a Treatment for Anxiety: A Meta-Analysis

International Journal of Clinical and Experimental Hypnosis, 67:3, 336-363, DOI: 10.1080/00207144.2019.1613863

The effect of mental stress on the non-dipolar components of the T wave: modulation by hypnosis

Psychosomatic Medicine 2005 May-Jun;67(3):376-83

Single-session hypnotherapy for smoking cessation

European Journal of General Practice June 2002, Volume 8