extensor rigidity

rigid contractions of extensor muscles. The kind of rigidity sometimes indicates the site of the motor neuron lesion associated with the disorder. Injury to the cerebellum produces increased tone of extensor muscles, called cerebellar rigidity. See also decerebrate rigidity.

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Psychology term of the day

July 27th 2024

defensible space

a set of principles and guidelines for the design and planning of settings to reduce crime. Among the critical elements of defensible space are the creation of shared territories in which people have collective control, good surveillance, and markers and other symbols of ownership and primary territory. See territoriality.