KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Substantia nigra. Computer illustration showing a healthy substantia nigra from a human brain and a close-up view of dopaminergic neurons found in the substantia nigra. The substantia nigra plays an important role in reward, addiction, and movement. Degeneration of this structure is characteristic of Parkinson's disease.
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