title: Electrophysiology of normal sinus node with and without autonomic blockade.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001285:Atropine; D001341:Autonomic Nervous System / Q000502:physiology*; D002036:Bundle of His / Q000502:physiology; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D010275:Parasympathetic Nervous System / Q000502:physiology; D011433:Propranolol; D012804:Sick Sinus Syndrome / Q000175:diagnosis / Q000503:physiopathology; D012849:Sinoatrial Node / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology; D014630:Vagus Nerve / Q000502:physiology
chemical_list: D001285:Atropine; D011433:Propranolol