decerebrate (redirected from decerebrations)

decerebrate /de·cer·e·brate/ (-ser´ĕ-brāt) to eliminate cerebral function by transecting the brain stem or by ligating the common carotid arteries and basilar artery at the center of the pons; an animal so prepared, or a brain-damaged person with similar neurologic signs.

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de·cer·e·brate (d-sr-brt, -brt)

adj.

Of, relating to, or characteristic of an individual who has suffered a brain injury that results in neurological function comparable to that resulting from decerebration of an animal.

v. (-brt)

To eliminate cerebral brain function in an animal by decerebration.

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decerebrate

[dēser′əbrāt]

1 lacking a cerebrum.

2 lacking neural communication between the cerebrum and lower portions of the central nervous system.

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decerebrate [de-ser´ĕ-brāt]

1. to eliminate cerebral function by transection of the brainstem or ligation of the common carotid arteries and basilar artery at the center of the pons.

2. a laboratory animal so prepared.

decerebrate rigidity a posture found in those with lesions of the upper part of the brainstem or severe bilateral lesions of the cerebrum; the patient lies in rigid extension with the arms internally rotated at the shoulders, elbows, knees, and hips extended, and fingers, ankles, and toes flexed. The jaw may be clenched with the neck hyperextended. Called also decerebrate posturing.

Decerebrate rigidity (or posturing).

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decerebrate

to eliminate cerebral function by transecting the brainstem or by ligating the common carotid arteries and basilar artery at the center of the pons; an animal so prepared, or a brain-damaged animal with similar neurological signs.

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decerebrate rigidity

rigid extension of the limbs as a result of decerebration; also occurs as a result of lesions in the upper brainstem.