Psychology / Unit 3 Psych 0334 short lesson, about 20 seconds
Narcolepsy
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The idea
Narcolepsy is a disorder marked by overwhelming daytime sleepiness and sudden uncontrollable entries into REM sleep.
In practice
A person falls into REM sleep within seconds during a conversation, sometimes losing muscle tone while awake.
Where people slip
Narcolepsy is neurological and involves the loss of specific hypothalamic cells. It is not a sleep habit.
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