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Unformatted text preview: • Consists of 4 subcortical nuclei o Striatum (caudate nucleus, putamen, nucleus accumbens) o Globus pallidus (Gp) o Substantia nigra o Subthalamic nucleus • Basal ganglia loop o Primary input: cerebral cortex o Output: brainstem & via thalamus to prefrontal, premotor & motor cortices o No direct output to spinal cord • Role of basal ganglia o Damage can disrupt movements & also cause deficits in other neural functions – cognition, perception o Facilitate movement &/or suppress movement Act to reinforce selected motor pattern Suppress potentially conflicting motor patterns o Balance between direct & indirect pathways o Primarily functions through disinhibition...
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- Fall '10
- Anthropology, Substantia nigra, basal ganglia loop