title: Supernormality.
mesh_terms: D000200:Action Potentials; D001281:Atrial Fibrillation / Q000503:physiopathology; D002037:Bundle-Branch Block / Q000503:physiopathology; D004056:Differential Threshold; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006325:Heart Atria / Q000503:physiopathology; D006327:Heart Block / Q000503:physiopathology; D006329:Heart Conduction System / Q000502:physiology / Q000503:physiopathology; D006339:Heart Rate; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D009203:Myocardial Infarction / Q000503:physiopathology; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology