Basal ganglia如何影響motor cortex的活性？
透過direct pathway降低motor cortex的活性，透過indirect pathway增強motor cortex的活性
透過direct pathway增強motor cortex的活性，透過indirect pathway降低motor cortex的活性
direct pathway與indirect pathway均降低motor cortex的活性
direct pathway與indirect pathway均增強motor cortex的活性
