White light during daytime does not improve alertness in well-rested individuals

Renske Lok*, Tom Woelders, Marijke C. M. Gordijn, Roelof A. Hut, Domien G. M. Beersma

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Broad-spectrum light applied during the night has been shown to affect alertness in a dose-dependent manner. The goal of this experiment was to investigate whether a similar relationship could be established for light exposure during daytime. Fifty healthy participants were subjected to a paradigm (0730-1730 h) in which they were intermittently exposed to 1.5 h of dim light (

Original languageEnglish
Pages (from-to)637-648
Number of pages12
JournalJournal of Biological Rhythms
Volume33
Issue number6
DOIs
Publication statusPublished - Dec-2018

Keywords

  • human
  • light
  • alertness
  • daytime
  • dose-response curve
  • KAROLINSKA SLEEPINESS SCALE
  • SHORT-WAVELENGTH LIGHT
  • CORE BODY-TEMPERATURE
  • BRIGHT LIGHT
  • SUBJECTIVE ALERTNESS
  • WAKING ELECTROENCEPHALOGRAM
  • MELATONIN SUPPRESSION
  • COGNITIVE PERFORMANCE
  • PHOTIC SENSITIVITY
  • CIRCADIAN PHASE

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