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Investigation of dose-response relationships for effects of white light exposure on correlates of alertness and executive control during regular daytime working hours

Journal of Biological Rhythms, 2018, Vol.33(6), pp.649-661 [Peer Reviewed Journal]

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  • Title:
    Investigation of dose-response relationships for effects of white light exposure on correlates of alertness and executive control during regular daytime working hours
  • Author: Smolders, Karin C.H.J. ; Peeters, Samantha T. ; Vogels, Ingrid M.L.C. ; de Kort, Yvonne A.W.
  • Contributor: Human Technology Interaction
  • Found In: Journal of Biological Rhythms, 2018, Vol.33(6), pp.649-661 [Peer Reviewed Journal]
  • Subjects: Alertness ; Daytime ; Dose-Response Curve ; Executive Control ; Light ; Physiology ; Physiology (Medical) ; Journal Article ; Research Support, Non-U.S. Gov'T
  • Language: English
  • Description: To date, it is largely unknown which light settings define the optimum to steer alertness and cognitive control during regular daytime working hours. In the current article, we used a multimeasure approach combined with a relatively large sample size ( N = 60) and a large range of intensity levels (20-2000 lux at eye level) to investigate the dose-dependent relationship between light and correlates of alertness and executive control during regular working hours in the morning and afternoon. Each participant was exposed to a single-intensity light level for 1 h after a 30-min baseline phase (100 lux at the eye) in the morning and afternoon (on separate days) during their daily routine. Results revealed no clear dose-dependent relationships between 1-h daytime light exposure and correlates of alertness or executive control. Subjective correlates showed only very modest linear relationships with the log-transformed illuminance, and we found no significant effects of light intensity on the...
  • Identifier: ISSN: ; ISSN: 0748-7304

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