T-wave amplitude as an index of cardiac sympathetic activity: a misleading concept.
D000818:Animals; D004558:Electric Stimulation; D004562:Electrocardiography / Q000592:standards*; D005728:Ganglia, Sympathetic / Q000502:physiology; D006329:Heart Conduction System / Q000502:physiology*; D006801:Humans; D013564:Sympathetic Nervous System / Q000502:physiology*