title: Bidirectional effects of reinforcement shifts on pituitary adrenal activity.
mesh_terms: D000818:Animals; D003216:Conditioning, Operant; D003345:Corticosterone / Q000097:blood; D004327:Drinking Behavior; D005108:Extinction, Psychological; D005639:Frustration; D008297:Male; D010913:Pituitary-Adrenal System; D051381:Rats; D012055:Reinforcement Schedule; D012201:Reward; D012527:Satiation; D014868:Water Deprivation
chemical_list: D003345:Corticosterone