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Spectral analysis of the normal electrocardiogram of rabbits


Basic Research in Cardiology 80(4): 353-356
Spectral analysis of the normal electrocardiogram of rabbits
A spectral analysis of the QRS complex of the rabbit's electrocardiogram was made. The amplified ECG signals were filtered through low-pass filter with cut-off frequency 50 Hz and steepness 12 dB/oct, and fed to a multichannel oscilloscope monitor. The images obtained were photographed. They were subjected to analog-to-digital conversion. The values were fed for processing to an EC 1035 computer. A standard discrete Fourier transformation was used. The spectral curve exhibited a considerable amplitude of the higher harmonics. Point-20 dB was at 164 Hz and point-30 dB was at 314 Hz. It was concluded that for accurate reproduction of the rabbit's ECG the recording electrocardiograph would have a bandwidth up to 225 Hz. An amplitude error not exceeding 10 per cent would be guaranteed.

Accession: 006459464

PMID: 4051938

DOI: 10.1007/bf01908178

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