Sleep-learning
（重定向自Hypnopedia）
Sleep-learning (also known as 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, while others have found that the brain indeed reacts to stimuli and processes them while we are asleep.