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Bio Norman Doidge Norman Doidge, M.D., is a psychiatrist, psychoanalyst, researcher, author, essayist and poet. He is on the Research Faculty at Columbia University's Center for Psychoanalytic Training and Research, in New York, and the University of Toronto's Department of Psychiatry. He is a native of Toronto.
During hypnosis the brain shows a characteristic sequence of brain wave activity. This can now be artificially reproduced through the use of audio tones; a process known as brain wave entrainment. If you are in a particular state, for example, very anxious, then you will produce a unique 'signature' of brainwaves. This applies equally to other states, such as learning and the focused concentration of competitive sport. These are states that can take a long time and a lot of physical effort to attain.