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Updated: Jun 23, 2026

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice
Published on: August 2, 2017
Effect of mood during daily life on autonomic nervous activity balance during subsequent sleep
Kohzoh Yoshino1, Katsunori Matsuoka
1Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka, Ikeda, Osaka, Japan. yoshino-k@aist.go.jp
Abstract:
RR-interval and eight types of mood level were recorded for 48 h from 40 normal male subjects. Sympathovagal balance was evaluated by calculating the normalized high-frequency power (HFnu) of RR-interval variability. The mean mood levels during 6 h before bedtime and the mean HFnu during 3 h after bedtime were compared. The data were normalized individually and the differences from the first night (Deltamood and DeltaHFnu) were taken. The correlation coefficient between Deltadepression and DeltaHFnu was -0.53, and that between Deltaworry and DeltaHFnu was -0.44. This implies that both daily depression and worry shift toward sympathetic dominance during subsequent sleep.
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