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Sleep-learning (also known as sleep-teaching, hypnopædia, or hypnopedia) is an attempt to convey information to a sleeping person, typically by playing a sound recording to them while they sleep. Research on this has been inconclusive. Some early studies tended to discredit the technique's effectiveness,〔 p. 171 "But most scientist agree that learning during sleep--that is actively acquiring new knowledge--is probably impossible. Certainly, attempts to teach slumbering adult subjects vocabulary or foreign languages or lists of items has failed miserably."〕〔 p. 9 "While it is popularly believed that a person can learn and remember while sleeping, in fact research has shown that learning does not take place while you are sound asleep...However, there is some evidence suggesting that you can learn while you are very drowsy, or even in a very light sleep. The material must be presented at just the right time; if you are not sleepy enough, the material will wake you up, and if you're deeply asleep, the materials won't make an impression at all. In addition, complex material involving reasoning or understanding can't be learned while in a drowsy state."〕 while others have found that the brain indeed reacts to stimuli and processes them while we are asleep.〔 〕 ==History== In 1927, Alois Benjamin Saliger invented the Psycho-Phone for sleep learning, stating that "It has been proven that natural sleep is identical with hypnotic sleep and that during natural sleep the unconscious mind is most receptive to suggestions." Since the electroencephalography studies by Charles W. Simon and William H. Emmons in 1956, learning by sleep has not been taken seriously. The researchers concluded that learning during sleep was "impractical and probably impossible." They reported that stimulus material presented during sleep was not recalled later when the subject awoke unless alpha wave activity occurred at the same time the stimulus material was given. Since alpha activity during sleep indicates the subject is about to awake, the researchers felt that any learning occurred in a waking state.〔 p. 78 Referring to Charles W. Simon and William H. Emmons (EEG, Consciousness, and Sleep ), ''Science'', 1956, 124, 1066-1069.〕〔 Page 125〕 In 2012, research from the Weizmann Institute of Science indicated that classical conditioning can occur during sleep by using odor recognition. "During sleep, humans can strengthen previously acquired memories, but whether they can acquire entirely new information remains unknown. The nonverbal nature of the olfactory sniff response, in which pleasant odors drive stronger sniffs and unpleasant odors drive weaker sniffs, allowed us to test learning in humans during sleep." 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「Sleep-learning」の詳細全文を読む スポンサード リンク
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