title: The distribution of energy in the electrocardiogram.
mesh_terms: D000703:Analog-Digital Conversion; D001285:Atropine / Q000494:pharmacology; D003201:Computers; D004562:Electrocardiography; D005583:Fourier Analysis; D006339:Heart Rate / Q000187:drug effects; D006801:Humans
chemical_list: D001285:Atropine