decerebrate rigidity

rigidity of the body that occurs when the brainstem is functionally separated from the cerebral cortex, typically as a result of a brain lesion or vascular disorder. It is marked by bilateral rigid extension, adduction, and hyperpronation of the legs and arms. Also called decerebrate posturing; extensor posturing.

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Psychology term of the day

December 21st 2024

seasonal mood disorder

see seasonal affective disorder.