Estimation of cardiac and respiratory rhythms based on an AMFM demodulation and an adaptive eigenvector decomposition

Stéphane Bruno 1 Pascal Scalart 2
1 Aphycare Technologies
2 R2D2 - Reconfigurable and Retargetable Digital Devices
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, INRIA Rennes, ENSSAT - École Nationale Supérieure des Sciences Appliquées et de Technologie
Abstract : In a goal of sleep researches, we need to estimate cardiac and respiratory rhythms on 20-second epochs of a signal giving the variations in radial arterial pressure. This signal is amplitude and frequency modulated by cardiac and respiratory contributions. The technique we developped combines an amplitude and frequency (AMFM) demodulation using Teager energy operator and an adaptive eigenvector decomposition. The interest of the method lies in its independence from artefacts obtained for reasonable calculation and memory costs. Results indicate a close correspondence between estimations and reference values both for cardiac and respiratory estimations (mean error of 4% for both and standard deviation of 7% for cardiac and 14% for respiration rhythm).
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Communication dans un congrès
XIII European Signal Processing Conference (EUSIPCO'05), Sep 2005, Antalia, Turkey. 2005
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Stéphane Bruno, Pascal Scalart. Estimation of cardiac and respiratory rhythms based on an AMFM demodulation and an adaptive eigenvector decomposition. XIII European Signal Processing Conference (EUSIPCO'05), Sep 2005, Antalia, Turkey. 2005. 〈inria-00482656〉

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