title: Consumption and cumulation of the inotropic effect of depolarization. A dynamic, descriptive analysis of interval-strength relationship in the heart in vivo.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology; D005117:Cardiac Complexes, Premature; D004285:Dogs; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D008433:Mathematics
chemical_list: D002118:Calcium