title: [Electrical activity study of the heart (a review of the literature)].
mesh_terms: D000200:Action Potentials; D000328:Adult; D016275:Atrial Function; D004562:Electrocardiography; D004594:Electrophysiology; D006321:Heart / Q000502:physiology*; D006330:Heart Defects, Congenital / Q000175:diagnosis; D006331:Heart Diseases / Q000175:diagnosis; D006339:Heart Rate; D006801:Humans; D007231:Infant, Newborn; D008875:Middle Aged; D014672:Vectorcardiography; D016276:Ventricular Function
vernacular_title: K probleme izucheniia élektricheskoĭ aktivnosti serdtsa (obzor literatury).