Effect of mood during daily life on autonomic nervous activity balance during subsequent sleep.
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.
Yoshino
Kohzoh
K
Institute 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
Matsuoka
Katsunori
K
D000054:Acceleration; D000203:Activities of Daily Living; D000328:Adult; D000339:Affect / Q000502:physiology*; D001341:Autonomic Nervous System / Q000502:physiology*; D005583:Fourier Analysis; D006801:Humans; D008297:Male; D010147:Pain Measurement; D017286:Polysomnography / Q000379:methods; D004856:Postural Balance / Q000502:physiology*; D012890:Sleep / Q000502:physiology*; D013223:Statistics as Topic; D055815:Young Adult