PERIAQUEDUCTAL GRAY (PAG) By N., Sam M.S. - 4 an area of the brainstem, with a plethora of nerve cell bodies, which encompasses the cerebral aqueduct. An element of the limbic system- it plays an imperative part in arranging defensive actions. PERIAQUEDUCTAL GRAY (PAG): "The PAG is thought to play a part in patients with high blood pressure." Related Psychology Terms ARTERIOSCLEROTIC BRAIN DISORDER DEFENSE MECHANISM (Ego Defense Mechanism) ELECTROSHOCK THERAPY (Elec- troconvulsive Therapy; EST, ECT) CEREBRAL CORTEX NURSERY SCHOOL EXPERIENCE EMOTION (General) FAMILY CARE CHILD PSYCHIATRY OBSESSRVE-COMPULSIVE REACTION Dissociative Identity Disorder Cite this page: N., Sam M.S., "PERIAQUEDUCTAL GRAY (PAG)," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/periaqueductal-gray-pag/ (accessed August 17, 2022).