Computer analysis of the RR interval-contractility relationship during random stimulation of the isolated heart.
D000818:Animals; D001281:Atrial Fibrillation; D003201:Computers; D004558:Electric Stimulation; D004562:Electrocardiography; D004594:Electrophysiology; D006321:Heart / Q000502:physiology*; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D051381:Rats