mani
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whats the difference in decerebrate and decorticate rigidity? where is the lesion in the two?
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| whereami
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I believe the decorticate rigidity would arise from a supratentorial lesion affecting descending motor neuron control, while the decerebrate would result from a lesion in the brainstem. The former is characterized by flexion of the upper extremities and extension of the lower extremities, and the latter has extension for all extremities.
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| mani
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thanx 4 ur time
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| mdwannabe
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just think of the rubro-spibal tract... it is Red nucleus that is responsible for arm flexion. So if lesion above Red nuc, then flexion still intact...brain stem still OK..coz Red n. is b/w sup and inf colliculi in Mid brain... If lesion below that, then all extension occurs..no oppposition... really bad prognosis.
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| mani
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thanx every body, i got it
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