title: Changes in heart rate during suppression of operant responding in pigs.
mesh_terms: D000161:Acoustic Stimulation; D000818:Animals; D001307:Auditory Perception; D001522:Behavior, Animal; D003214:Conditioning, Classical; D003216:Conditioning, Operant; D004597:Electroshock; D004644:Emotions; D005260:Female; D006185:Habituation, Psychophysiologic; D006339:Heart Rate; D008297:Male; D009043:Motor Activity; D011678:Punishment; D012055:Reinforcement Schedule; D013045:Species Specificity; D013552:Swine