Hajime Sugimori

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The dynamics of fractal structures of heart rate (HR) fluctuations in successive rapid eye movement sleeps (REMS) was investigated in a healthy male. Fractal analysis using a purposely-devised method was carried out at 10-min time series of HR, which were being recorded simultaneously by an electroencephalogram at night. Scaling relationships showed three(More)
We devised a new analysis using quartile deviation of integrated and subtracted fluctuation, termed QIS-A, to determine a fractal dimension of non-stationary fluctuation. In the algorithm, computations of the quartile deviation, Q(n), of all integrated and subtracted fluctuations are repeated over all scales (n). The fractal scaling exponent is determined(More)
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