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SECTION III
Central & Peripheral Neurophysiology
FIGURE 16–7
A circuit drawing representing lesions produced in experimental animals to replicate decerebrate and decorticate
deficits seen in humans.
Bilateral transections are indicated by dashed lines A, B, C, and D. Decerebration is at a midcollicular level
(A),
decor-
tication is rostral to the superior colliculus, dorsal roots sectioned for one extremity
(B),
and removal of anterior lobe of cerebellum
(C).
The
objective was to identify anatomic substrates responsible for decerebrate or decorticate rigidity/posturing seen in humans with lesions that
either isolate the forebrain from the brain stem or separate rostral from caudal brain stem and spinal cord.
(Reproduced with permission from Haines
DE [editor]:
Fundamental Neuroscience for Basic and Clinical Applications,
3rd ed. Elsevier, 2006.)