Role of the premature action potential in contractile potentiation: a study of paired stimulation.
D000200:Action Potentials; D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D005260:Female; D006321:Heart / Q000502:physiology*; D008297:Male; D008564:Membrane Potentials; D009119:Muscle Contraction; D010210:Papillary Muscles / Q000502:physiology; D013997:Time Factors; D016276:Ventricular Function