title: Preavoidance blood pressure elevations accompanied by heart rate decreses in the dog.
abstract: Blood pressure and heart rate were monitored continuously in five dogs for 1 hour before performance on a free-operant shock-avoidance task. Cardiovascular changes during the preavoidance hour were characterized by sustained and significant increases in blood pressure, and sustained and significant decreases in heart rate.
mesh_terms: D000818:Animals; D001362:Avoidance Learning; D001794:Blood Pressure; D003216:Conditioning, Operant; D004285:Dogs; D006339:Heart Rate; D013997:Time Factors