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isolation tank
An isolation tank is a lightless, soundproof tank inside which subjects float in salt water at skin temperature. They were first used by John C. Lilly〔Lilly, John C. & E.J. Gold (2000). Tanks for the Memories: Flotation Tank Talks. Gateways Books & Tapes. ISBN 0-89556-071-2〕 in 1954 to test the effects of sensory deprivation. Such tanks are now also used for meditation and relaxation and in alternative medicine. The isolation tank was originally called the sensory deprivation tank. Other names for the isolation tank include flotation tank, float tank, John C. Lilly tank, REST tank, and sensory attenuation tank.
==History==
The isolation tank was developed in 1954 by John C. Lilly, a medical practitioner and neuropsychiatrist. During his training in psychoanalysis at the US National Institute of Mental Health (NIMH), Lilly experimented with sensory deprivation in combination with a psychedelic agent, mostly LSD. In neurophysiology, there had been an open question about what keeps the brain going and the origin of its energy sources. One hypothesis was that the energy sources are biological and internal and do not depend upon the outside environment. It was argued that if all stimuli are cut off to the brain then the brain would go to sleep. Lilly decided to test this hypothesis and, with this in mind, created an environment which isolated an individual from external stimulation. From here, he studied the origin of consciousness and its relation to the brain.
Peter Suedfeld and Roderick Borrie of the University of British Columbia began experimenting on the therapeutic benefits of isolation tanks in the late 1970s. They named their technique "Restricted Environmental Stimulation Therapy" (REST).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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