Phase synchronization between two weakly coupled oscillators has been studied in chaotic systems for a long time. However, it is difficult to unambiguously detect such synchronization in experimental data from complex physiological systems. In this paper we review our study of phase synchronization between heartbeat and respiration in 150 healthy subjects during sleep using an automated procedure for screening the synchrograms. We found that this synchronization is significantly enhanced during non-rapid-eye-movement (non-REM) sleep (deep sleep and light sleep) and is reduced during REM sleep. In addition, we show that the respiration signal can be reconstructed from the heartbeat recordings in many subjects. Our reconstruction procedure, which works particularly well during non-REM sleep, allows the detection of cardiorespiratory synchronization even if only heartbeat intervals were recorded.
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March 2009
Research Article|
March 31 2009
Automated synchrogram analysis applied to heartbeat and reconstructed respiration Available to Purchase
Claudia Hamann;
Claudia Hamann
1Institut für Physik,
Technische Universität Ilmenau
, 98684 Ilmenau, Germany
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Ronny P. Bartsch;
Ronny P. Bartsch
2Department of Physics and Minerva Center,
Bar-Ilan University
, Ramat Gan 52900, Israel
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Aicko Y. Schumann;
Aicko Y. Schumann
3Institute of Physics,
Martin-Luther-Universität Halle-Wittenberg
, 06099 Halle (Saale), Germany
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Thomas Penzel;
Thomas Penzel
4
Schlafmedizinisches Zentrum der Charité Berlin
, 10117 Berlin, Germany
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Shlomo Havlin;
Shlomo Havlin
2Department of Physics and Minerva Center,
Bar-Ilan University
, Ramat Gan 52900, Israel
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Jan W. Kantelhardt
Jan W. Kantelhardt
3Institute of Physics,
Martin-Luther-Universität Halle-Wittenberg
, 06099 Halle (Saale), Germany
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Claudia Hamann
1
Ronny P. Bartsch
2
Aicko Y. Schumann
3
Thomas Penzel
4
Shlomo Havlin
2
Jan W. Kantelhardt
3
1Institut für Physik,
Technische Universität Ilmenau
, 98684 Ilmenau, Germany
2Department of Physics and Minerva Center,
Bar-Ilan University
, Ramat Gan 52900, Israel
3Institute of Physics,
Martin-Luther-Universität Halle-Wittenberg
, 06099 Halle (Saale), Germany
4
Schlafmedizinisches Zentrum der Charité Berlin
, 10117 Berlin, Germany
Chaos 19, 015106 (2009)
Article history
Received:
December 04 2008
Accepted:
February 17 2009
Citation
Claudia Hamann, Ronny P. Bartsch, Aicko Y. Schumann, Thomas Penzel, Shlomo Havlin, Jan W. Kantelhardt; Automated synchrogram analysis applied to heartbeat and reconstructed respiration. Chaos 1 March 2009; 19 (1): 015106. https://doi.org/10.1063/1.3096415
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