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Decerebrate posturing is commonly seen in pontine strokes. A patient with decorticate posturing may begin to show decerebrate posturing, or may go from one form of posturing to the other. [1] Progression from decorticate posturing to decerebrate posturing is often indicative of uncal (transtentorial) or tonsilar brain herniation.
In an animal where the cortical areas or the midbrain have been "cut off" from the neural axis, this reflex is hyperactive and the animal will maximally extend all four limbs. This phenomenon is known as decerebrate rigidity. In humans, true decerebrate rigidity is rare since the damage to the brain centers it might be caused by usually are lethal.
Abnormal posturing Opisthotonus or opisthotonos (from Ancient Greek : ὄπισθεν , romanized : opisthen , lit. 'behind' and τόνος , tonos , 'tension') is a state of severe hyperextension and spasticity in which an individual's head, neck and spinal column enter into a complete "bridging" or "arching" position.
Accompanying signs and symptoms may include decerebrate posturing; fixed, dilated pupils; coma or profound stupor; quadriparesis; absent corneal reflex; negative oculocephalic reflex; and obliteration of the gag reflex.
Decorticate posturing is a stereotypical posturing in which the patient has arms flexed at the elbow, and arms adducted toward the body, with both legs extended. Decerebrate posturing is a stereotypical posturing in which the legs are similarly extended (stretched), but the arms are also stretched (extended at the elbow). The posturing is ...
Abnormal posturing#Decerebrate; To a section: This is a redirect from a topic that does not have its own page to a section of a page on the subject.
The rupture of these vessels leads to linear or flamed shaped hemorrhages. The disrupted brainstem can lead to decorticate posture, respiratory center depression and death. Other possibilities resulting from brain stem distortion include lethargy, slow heart rate, and pupil dilation. [9]
There are several synonyms that refer to human positioning, often used interchangeably, but having specific nuances of meaning. [1] Position is a general term for a configuration of the human body. Posture means an intentionally or habitually assumed position. Pose implies an artistic, aesthetic, athletic, or spiritual intention of the position.