Periaqueductal Gray |
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| Central Gray, Mesencephalic; Central Gray, Midbrain; Gray, Mesencephalic Central; Gray, Midbrain Central; Gray, Periaqueductal | |
| Central gray matter surrounding the cerebral aqueduct in the mesencephalon. Physiologically it is probably involved in rage reactions, the lordosis reflex, feeding responses, bladder tonus, and pain. | |