P-waves and QRS-complexes exhibit similar spectral distributions with maximum spectral densities between 10 and 30 Hz.
Supports unified ECG filtering for atrial/ventricular signals; leaves open validation in arrhythmia detection algorithms.
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.
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Kleinert et al. (1979) studied this question.