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Characterization of sleep stages by correlations in the magnitude and sign of heartbeat increments
Open accessAbstract
We study correlation properties of the magnitude and the sign of the increments in the time intervals between successive heartbeats during light sleep, deep sleep, and rapid eye movement (REM) sleep using the detrended fluctuation analysis method. We find short-range anticorrelations in the sign time series, which are strong during deep sleep, weaker during light sleep, and even weaker during REM sleep. In contrast, we find long-range positive correlations in the magnitude time series, which are strong during REM sleep and weaker during light sleep. We observe uncorrelated behavior for the magnitude during deep sleep. Since the magnitude series relates to the nonlinear properties of the original time series, while the sign series relates to the linear properties, our findings suggest that the nonlinear properties of the heartbeat dynamics are more pronounced during REM sleep. Thus, the sign and the magnitude series provide information which is useful in distinguishing between the sleep stages.
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Akselrod, S., Gordon, D., Ubel, F. A., Shannon, D. C., Berger, A. C., & Cohen, R. J. (1981) · Science · doi:10.1126/science.6166045 · Cited by 5,079
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Bartsch, R. P., Liu, K. K. L., Bashan, A., & Ivanov, P. C. (2015) · PLOS ONE · doi:10.1371/journal.pone.0142143 · Cited by 411
Self-citationEndogenous circadian rhythm in an index of cardiac vulnerability independent of changes in behavior
Hu, K., Ivanov, P. C., Hilton, M. F., Chen, Z., Ayers, R. T., Stanley, H. E., & Shea, S. A. (2004) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0408243101 · Cited by 141
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Metadata
- Authors
- Kantelhardt, J. W., Ashkenazy, Y., Ivanov, P. C., Bunde, A., Havlin, S., Penzel, T., Peter, J.-H., & Stanley, H. E.
- Venue
- Physical Review E
- Publisher
- American Physical Society (APS)
- Published
- 2002-05-08
- Volume
- 65
- Issue
- 5
- Pages
- 051908-051908
- ISSN
- 1063-651X (ISSN-L)
- 1095-3787
- OpenAlex
- W2136774414
- Cited by
- 186
- References
- 1
- FWCI
- 6.02
- Type
- journal article
- Language
- en
- Open access
- green
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- Kantelhardt, J. W., Ashkenazy, Y., Ivanov, P. C., Bunde, A., Havlin, S., Penzel, T., Peter, J.-H., & Stanley, H. E. (2002). Characterization of sleep stages by correlations in the magnitude and sign of heartbeat increments. Physical Review E. https://doi.org/10.1103/physreve.65.051908
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