substantia nigra

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English[edit]

Etymology[edit]

Scientific Latin, from substantia (substance) + nigra (black).

Noun[edit]

substantia nigra (plural substantiae nigrae or substantia nigras)

  1. (anatomy) A brain structure located in the mesencephalon (midbrain) that plays an important role in reward, addiction, and movement, damage to which occurs in Parkinson's and Parkinsonian patients. [from 19th c.]
    • 1997, Roy Porter, The Greatest Benefit to Mankind, Folio Society 2016, p. 551:
      Their location was established in the 1950s as the substantia nigra, a layer of grey matter in the midbrain.

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