- hypnagogic nightmare
- Also referred to as sleep-onset nightmare. The term hypnagogic nightmare is indebted to the Greek words hupnos (sleep) and agein (to lead, to transport). It is used to denote a type of " nightmare occurring during sleep onset (i.e. during stage N1 sleep as recorded on the electroencephalogram). Hypnagogic nightmares typically take the form of frightening " hypnagogic hallucinations which interrupt the process of falling asleep and lead to a sudden return to the state of full wakefulness.ReferencesHartmann, E. (1984). The nightmare. The psychology and biology ofterrifying dreams. New York, NY: Basic Books.
Dictionary of Hallucinations. J.D. Blom. 2010.
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nightmare — Also known as ephialtes nocturnus, dream anxiety attack, REM anxiety dream, REM nightmare, and D nightmare. The term nightmare comes from the Old English noun *mare, which means hag or goblin (see also the entries Mar, Mare, and Incubus). It… … Dictionary of Hallucinations
sleep-onset nightmare — see hypnagogic nightmare … Dictionary of Hallucinations
waking-nightmare hallucination — Also known as w nightmare hallucination and nightmare. The term waking nightmare hallucination was proposed in or shortly before 2003 by the Canadian psychologist and sleep researcher James Allan Cheyne to denote a *hypnagogic or * hypnopompic … Dictionary of Hallucinations
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microsleep — A term introduced in or shortly before 1966 by the Russian American neurophysiologist Wladimir Theodore Liberson (1904 1994) to denote a sleep state lasting for a short lapse of time, typically a few seconds to a minute. The definition and… … Dictionary of Hallucinations
sleep — I (New American Roget s College Thesaurus) n. slumber, somnolence, nap, doze, drowse, rest, repose; coma; hypnosis. v. i. slumber, repose, doze, nap; be dead or dormant. II (Roget s IV) n. Syn. slumber, doze, nap, rest, repose, sound sleep, deep… … English dictionary for students