Does Abnormal spinal Reciprocal Inhibition lead to Co-Contraction of Antagonist Motor Units? A Modeling Study
نویسنده
چکیده
It is suggested that co-contraction of antagonist motor units perhaps due to abnormal disynaptic I(a) reciprocal inhibition is responsible for Parkinsonian rigidity. A neural model of Parkinson's disease bradykinesia is extended to incorporate the effects of spindle feedback on key cortical cells and examine the effects of dopamine depletion on spinal activities. Simulation results show that although reciprocal inhibition is reduced in DA depleted case, it doesn't lead to co-contraction of antagonist motor neurons. Implications to Parkinsonian rigidity are discussed.
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عنوان ژورنال:
- International journal of neural systems
دوره 17 4 شماره
صفحات -
تاریخ انتشار 2007