PERIAQUEDUCTALGRAY

Periaqueductal gray

Periaqueductal gray is the gray matter located around the cerebral aqueduct within the tegmentum of the midbrain. It plays a role in the descending modulation of pain and in defensive behaviour. The ascending pain and temperature fibers of the spinothalamic tract also send information to the PAG via the spinomesencephalic tract .

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periaqueductal gray

Noun

  1. The region surrounding the cerebral aqueduct in the midbrain, playing an important role in analgesia.


The above text is a snippet from Wiktionary: periaqueductal gray
and as such is available under the Creative Commons Attribution/Share-Alike License.

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