Autonomic nervous function after evening bright light therapy: Spectral analysis of heart rate variability

Autor: Satoshi Sakakibara, Masako Kohsaka, Tsukasa Koyama, Ikuko Kawai, Riko Kobayashi, Noriko Fukuda, Hiroshi Honma
Rok vydání: 2000
Předmět:
Zdroj: Psychiatry and Clinical Neurosciences. 54:363-364
ISSN: 1440-1819
1323-1316
Popis: In order to investigate the effects of 5000 lx evening bright light on autonomic nervous function, a spectral analysis was used to assess heart rate variability in consecutive 5-min epochs just after 60 min of bright light therapy was given to 12 young women (range: 20–21 years of age). The study revealed that a low frequency band (LF) increased in bright light conditions (BL) in comparison with controlled conditions (CL). High frequency band (HF), LF : HF ratio and the coefficient of variance (CV R-R) were not significantly different between the two conditions. These results indicate that 5000 lx evening bright light may affect sympathetic nervous system activity in healthy women.
Databáze: OpenAIRE
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