title: Heart-rate conditioning in rats as a function of interstimulus interval.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D003214:Conditioning, Classical; D003213:Conditioning, Psychological; D005260:Female; D006339:Heart Rate; D051381:Rats; D011919:Rats, Inbred Strains; D012054:Reinforcement, Psychology; D013997:Time Factors