title: Coping behavior: learned helplessness, physiological change and learned inactivity.
mesh_terms: D000223:Adaptation, Psychological / Q000502:physiology*; D000818:Animals; D001362:Avoidance Learning / Q000502:physiology; D001921:Brain / Q000378:metabolism; D003863:Depression / Q000523:psychology*; D004285:Dogs; D006801:Humans; D009638:Norepinephrine / Q000378:metabolism; D051381:Rats; D013315:Stress, Psychological / Q000523:psychology
chemical_list: D009638:Norepinephrine