Effects of television luminance and wavelength at habitual bedtime on melatonin and cortisol secretion in humans

Yoko Komada, Kazuyuki Aoki, Seiichi Gohshi, Hideki Ichioka, Shigenobu Shibata

研究成果: Article

4 引用 (Scopus)

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The aim of this study was to examine the effect of exposure to different types of television displays at habitual bedtime on human melatonin and cortisol secretion. Thirteen male participants (mean age: 22.7 ± 0.85 years) were tested over three nights in one baseline and two experimental sessions. Participants were instructed to watch a movie on four different luminance- and wavelength-controlled television displays: normal luminance (450 candela [cd]/m2) or high luminance (1200cd/m2) and normal blue light or half blue light. Salivary melatonin and cortisol levels were measured at two time points before and after television viewing. There was no significant difference in cortisol secretion due to the different displays. Melatonin suppression was significantly lower following the exposure to the half-blue light display compared with the normal blue light display. These results suggest that the use of half-blue light displays during night time may prevent circadian rhythm dysfunction.

元の言語English
ページ(範囲)316-322
ページ数7
ジャーナルSleep and Biological Rhythms
13
発行部数4
DOI
出版物ステータスPublished - 2015 10 1
外部発表Yes

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)
  • Neurology
  • Neuropsychology and Physiological Psychology

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