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The study aims to present and interpret a novel index based on fractional calculus (
αc) and to assess differences in RR time series dynamics in subjects during meditation. Fractional differintegration (FDI) of a RR time series provides a new time series.αc is defined as the order of
the FDI operator that provides the time series with minimum variance. Analyzed time series were obtained from
the Exaggerated Heart Rate Oscillations During Two Meditation Techniques database.
This database contains RR time series before and after Chi Meditation and Kundalini Yoga.
It also contains recordings of elite athletes and healthy subjects while sleeping and during metronomic breathing at 0.25 Hz.
αc is significantly higher during Chi or Yoga meditation when compared with the recordings before the meditation starts or in
subjects while sleeping or during metronomic breathing.
CitationGarcia, M.; Ramos, J.; Fernandez, M. A novel index based on fractional calculus to assess the dynamics of heart rate variability: changes due to chi or yoga meditations. A: Computing in Cardiology. "Computing in Cardiology 2012". Cracòvia: Computing in Cardiology, 2012, p. 925-928.
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