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myoclonus

n. rapid, involuntary contraction of a muscle or group of muscles. This may occur normally, as when a limb or other part of the body suddenly jerks while falling asleep (see nocturnal myoclonus), or abnormally, as in Creutzfeldt–Jakob disease and other neurological disorders.

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Psychology term of the day

May 9th 2024

sudden unexpected nocturnal-death syndrome

sudden unexpected nocturnal-death syndrome

see nightmare-death syndrome.