Abstract
The objective of the present study was to analyze fractal structures of adult heart rate (HR) variability during a nap. Fractal analysis was carried out in one case over consecutive 10-min time series of HR, which were simultaneously recorded with electroencephalogram. Scaling relationships showed cross-over patterns characterized by αs and α1 (i.e. slopes above and below a cross-over point). The αs and α1 were black and white noise at Stage 4 of NREM sleep, and black and 1/f noise in REM sleep. Cross-over points changed from the first to second sleep cycle. We demonstrate the multifractal structures of HR variability during a nap in the present case.
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CITATION STYLE
Shono, H., Shono, M., Takasaki, M., Iwasaka, T., & Sugimori, H. (2001). Changes in fractal structure of heart rate variability during a nap in one case. In Psychiatry and Clinical Neurosciences (Vol. 55, pp. 175–176). https://doi.org/10.1046/j.1440-1819.2001.00814.x
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