title: Involvement of vagal activity in the unconditioned heart-rate responses of restrained rats.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D003214:Conditioning, Classical / Q000502:physiology; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D051381:Rats; D012149:Restraint, Physical; D013312:Stress, Physiological / Q000503:physiopathology*; D014630:Vagus Nerve / Q000503:physiopathology*
chemical_list: D001285:Atropine