Electrophysiological changes in the rat atrium with age.
D000200:Action Potentials; D000375:Aging; D000818:Animals; D016275:Atrial Function; D004558:Electric Stimulation; D006339:Heart Rate; D008297:Male; D008564:Membrane Potentials; D008839:Microelectrodes; D051381:Rats; D012849:Sinoatrial Node / Q000502:physiology*