title: Spectral properties of atrial and ventricular endocardial signals.
abstract: The spectral energy distributions of signals picked up by endocardial, atrial and ventricular electrodes have been investigated. The results show similar spectral distributions for P-waves and QRS-complexes with maximum spectral densities at frequencies between 10 and 30 Hz.
mesh_terms: D000328:Adult; D000368:Aged; D016275:Atrial Function; D004562:Electrocardiography; D004567:Electrodes, Implanted; D004594:Electrophysiology; D004699:Endocardium / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D016276:Ventricular Function