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middle insomnia

a period of sleeplessness that occurs after falling asleep normally, with difficulty in falling asleep again. It is a common symptom of a major depressive disorder. Also called broken sleep. Compare initial insomnia; terminal insomnia. See also segmented sleep.

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Psychology term of the day

January 23rd 2025

origin-of-language theory

origin-of-language theory

see language-origin theory.