Abstract
Characterizing variations in sleep stage composition is important in the scientific study of sleep. We use clustering, a form of unsupervised machine learning, to seek naturally occurring types within a collection of records that describe the sleep stage composition of 244 all-night human sleep studies. The results uncover a hierarchy of sleep composition types differentiated primarily by sleep efficiency or total sleep time and by the relative proportion of slow-wave sleep. The potential significance of these sleep type clusters for sleep medicine is suggested by associations between sleep type and health-related variables such as body-mass index, smoking frequency, and heart disease. EEG and ECG features, including spectral power distribution and measures of heart-rate variability, differ significantly among sleep types. The EEG signal provides sufficient information for an approximate reconstruction of the sleep type clusters, while ECG alone is found to be insufficient.
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Khasawneh, A., Alvarez, S.A., Ruiz, C., Misra, S., Moonis, M. (2013). Similarity Grouping of Human Sleep Recordings Using EEG and ECG. In: Fred, A., Filipe, J., Gamboa, H. (eds) Biomedical Engineering Systems and Technologies. BIOSTEC 2011. Communications in Computer and Information Science, vol 273. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29752-6_28
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DOI: https://doi.org/10.1007/978-3-642-29752-6_28
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