Control of fear bradycardia in the swamp right, Sylvilagus aquaticus.
D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004562:Electrocardiography; D005239:Fear / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects*; D011433:Propranolol / Q000494:pharmacology; D011817:Rabbits / Q000502:physiology*; D013997:Time Factors
D001285:Atropine; D011433:Propranolol