What is "sleep-learning"

n. teaching during sleep (as by suing recordings to teach a foreign language to someone who is asleep) [syn: 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.