title: The release of catecholamines by shocks and stimuli paired with shocks.
abstract: One monkey and five baboons were surgically prepared so that heart rate and blood pressure could be monitored continuously, and an extra-corporeal blood path was established to detect the secretion of epinephrine (adrenaline) and norepinephrine (noradrenaline). A respondent conditioning procedure was used in which a tone was paired with electric shocks. Epinephrine, but not norepinephrine was released by shocks, and a corresponding release was demonstrated by the tone alone. Heart rate and blood pressure changes were also elicited by shocks and by the tone.
mesh_terms: D000818:Animals; D001794:Blood Pressure; D003213:Conditioning, Psychological; D004597:Electroshock; D004837:Epinephrine / Q000378:metabolism*; D000882:Haplorhini; D006339:Heart Rate; D015186:Hominidae; D009638:Norepinephrine / Q000378:metabolism*; D013016:Sound
chemical_list: D009638:Norepinephrine; D004837:Epinephrine