Cardiac electrophysiology.
D000200:Action Potentials; D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D005117:Cardiac Complexes, Premature / Q000503:physiopathology; D004562:Electrocardiography; D006321:Heart / Q000033:anatomy & histology / Q000503:physiopathology; D006327:Heart Block / Q000503:physiopathology; D006329:Heart Conduction System / Q000502:physiology / Q000503:physiopathology*; D006801:Humans; D009206:Myocardium / Q000166:cytology