Motor control - Lesions
6 important questions on Motor control - Lesions
How do 1st motor lesions arise?
What is the result of a 1st motor lesion?
Less local inhibition (spastic paresis/paralysis)
Less inhibition of reflexes (hyperreflexia and Babinski)
What is damaged by a 1st motor lesion?
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How does a 2nd motor lesion arise?
What is damaged by a 2nd motor lesion?
What is the consequence of a 2nd motor lesion?
- loss of control (alpha and gamma motor neurons interrupted)
- no spasms (muscle fibers relax completely)
- Denervated muscle fibers will first atrophy, then degenerate
--> symptoms always ipsilateral to the lesion
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