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Sleep-learning
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<p>Sleep-learning or sleep-teaching (also known as hypnopædia or hypnopedia) is an attempt to convey information to a <a href="/facts/Sleep/0bSDElWc">sleeping</a> person, typically by playing a <a href="/facts/Sound_recording/BMbpAWkE">sound recording</a> to them while they sleep. Although sleep is considered an important period for <a href="/facts/Memory_consolidation/n9JtsvIB">memory consolidation</a>, scientific research has concluded that sleep-learning is possible. Once a concept explored in the early <a href="/facts/History_of_psychology/6U3EYjTy">history</a> of <a href="/facts/Psychology/duoqW7Sz">psychology</a>, sleep-learning appears frequently in fiction and <a href="/facts/Parapsychology/0cTMNMfD">parapsychology</a>, and is widely considered to be <a href="/facts/Pseudoscience/kdNzoLeS">pseudoscience</a>. </p>