The main function of the putamen is to regulate movements and influence various types of learning. It employs dopamine to perform its functions. The putamen also plays a role in degenerative neurological disorders, such as Parkinson's disease. The caudate works with the putamen to receive the input from cerebral cortex. They can be considered the "entrance" to the basal ganglia. The nucleus accumbens and medial caudate receive input from frontal cortex and limbic regions. The putamen and caudate are jointly connected with the substantia nigra, but most of their output goes to the globus pallidus.
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