Relationship of surface electrogram recordings to activity in the underlying specialized conducting tissue.
D000200:Action Potentials; D000818:Animals; D004285:Dogs; D004553:Electric Conductivity; D004558:Electric Stimulation; D004562:Electrocardiography; D004567:Electrodes, Implanted; D006329:Heart Conduction System; D008564:Membrane Potentials; D008839:Microelectrodes; D013997:Time Factors