periaqueductal gray

English

Noun

periaqueductal gray (plural not attested)

  1. (anatomy) The region surrounding the cerebral aqueduct in the midbrain, playing an important role in analgesia. [from 20th c.]
    • 2011, Steven Pinker, The Better Angels of Our Nature, Penguin 2012, p. 601:
      The periaqueductal gray contains circuits that control the sensorimotor components of rage.

References
  • Bear et al. Neuroscience, Exploring the Brain Co. 2001, Lippincot Williams and Wilkins
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