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Sensory deprivation (Sendep) or perceptual isolation〔Donald Olding Hebb, Essay on Mind, Psychological Press, 1980〕 is the deliberate reduction or removal of stimuli from one or more of the senses. Simple devices such as blindfolds or hoods and earmuffs can cut off sight and hearing, while more complex devices can also cut off the sense of smell, touch, taste, thermoception (heat-sense), and 'gravity'. Sensory deprivation has been used in various alternative medicines and in psychological experiments (e.g. with an isolation tank). Sensory deprivation can be used also in sexual acts to produce a feeling of repression or make other senses more sensitive; for example, the sensation of touch may be stronger when a blindfold is in use. Short-term sessions of sensory deprivation are described as relaxing and conducive to meditation; however, extended or forced sensory deprivation can result in extreme anxiety, hallucinations, bizarre thoughts, and depression.〔Stuart Grassian ( Psychiatric effects of solitary confinement )(PDF) This article is a redacted, non-institution and non-inmate specific, version of a declaration submitted in September 1993 in Madrid v. Gomez, 889F.Supp.1146. *Grassian (Psychopathological effects of solitary confinement ) American Journal of Psychiatry Online 1983; 140: 1450-1454 *Haney (Mental Health Issues in Long-Term Solitary and "Supermax" Confinement ), Crime Delinquency. 2003; 49: 124-156 *Daryl Matthews. (Physicians' Obligation to Speak Out for Prisoners' Health ), American Medical Association. *Karen Franklin (Segregation Psychosis ) *Harold I. Schwartz, (Death Row Syndrome and Demoralization: Psychiatric Means to Social Policy Ends ) J Am Acad Psychiatry Law 33:2:153-155 (2005)〕 A related phenomenon is perceptual deprivation, also called the ganzfeld effect. In this case a constant uniform stimulus is used instead of attempting to remove the stimuli; this leads to effects which has similarities to sensory deprivation. Sensory deprivation techniques were developed by some of the armed forces within NATO, as a means of interrogating prisoners within international treaty obligations. The European Court of Human Rights ruled that the use of the five techniques by British security forces in Northern Ireland amounted to a practice of inhuman and degrading treatment. ==Restricted Environmental Stimulation Therapy (REST)== There are two basic methods of restricted environmental stimulation therapy (REST): chamber REST and flotation REST. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sensory deprivation」の詳細全文を読む スポンサード リンク
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