Hypnosis in Practice

Psi Events:

• Hypnosis seemed promising for several reasons--first, it was controllable, unlike the spontaneous psi events or the often suspicious trances of professional mediums; second, because hypnotic subjects regularly reported experiencing unique and perhaps psychic phenomena.
• An investigation of hypnotic rapport was conducted by psychical research pioneer Edmund Gurney. The hypnotist was George Albert Smith, and the subject a man named Conway. Conway was put into a "tolerably deep trance." Smith and Gurney stood behind the entranced Conway without touching him. First Gurney pinched Smith's right arm, and Conway reacted by rubbing his own right arm at the exact same spot. When Gourney pinched Smith's left arm, Conway rubbed his left arm and complained loudly of the pain.
• The EEG of hypnotized subjects is no different from that of normal waking subjects. 
• Measurements of other physical functions also indicate that the hypnotized person reacts in almost exactly the same manner as the waking person.

Source: The Far Side of Consciousness (1975) by Daniel Cohen.

Crime detection:
Take the case of a wife who could not remember what had transpired before finding herself leaning over her husband's body with a bloodstained hammer in her hand. In deep trance, she related from her subconscious mind all that she had forgotten about her attack on her husband with a hammer and the unusual sexual problems that she said has provoked it. The woman's husband had been in the habit of demanding that she bestow sexual pleasures on his best male friend. When the best friend came over to visit the husband intimated that he wanted his male friend to receive the same sexual favors to which he was accustomed. The husband and wife argue, and the next thing the wife knew was she was standing in their bedroom with a bloody hammer in her right hand, looking over her husband's bleeding body lying on the bed. She called out to her visitor to call an ambulance, and he did.