The Substantia Nigra is a region in the midbrain that plays a crucial role in the control of movement. It is part of the basal ganglia, a group of structures involved in motor coordination, learning, and reward processing.
The Substantia Nigra consists of two main parts: the pars compacta and the pars reticulata. The pars compacta is primarily responsible for producing and releasing dopamine, a neurotransmitter that is essential for coordinating movement. The loss of dopamine-producing cells in this region is associated with the motor symptoms of Parkinson's disease.

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