title: Cholinergic mechanisms and alterations in behavioral suppression as factors producing time-dependent changes in avoidance performance.
mesh_terms: D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects*; D003214:Conditioning, Classical / Q000187:drug effects*; D004597:Electroshock; D005239:Fear; D007103:Immobilization; D007266:Inhibition, Psychological; D008124:Locomotion; D008297:Male; D008568:Memory / Q000187:drug effects*; D010830:Physostigmine / Q000008:administration & dosage / Q000494:pharmacology*; D051381:Rats; D012601:Scopolamine / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D010830:Physostigmine; D012601:Scopolamine