Summary
This paper highlights the gap between laboratory lighting studies and real-world workplace conditions, arguing that most people spend ~90% of their time indoors with potentially insufficient daylight for proper circadian entrainment. It proposes semi-controlled study methodologies—including neurobehavioral and physiological monitoring—to more accurately assess daylight's alerting benefits in realistic office environments.
Key Findings
- Modern lifestyles result in approximately 90% of time spent indoors, often under lighting conditions designed for comfort and energy efficiency rather than physiological adequacy.
- Existing research on acute alerting effects of light has predominantly used extreme or narrowly defined laboratory conditions, limiting applicability to real workplace scenarios.
- The paper is methodological in nature; it proposes assessment frameworks rather than reporting experimental outcome data, so no specific quantitative effect sizes are available.
Categories
Workplace Performance: Proposes methods to assess daylight's alerting effects on workers in realistic indoor office settings.
Sleep & Circadian Health: Addresses circadian entrainment and the physiological need for adequate daylight exposure throughout the workday.
The Science of Light: Discusses spectral properties of daylight, particularly blue-enriched light, and its psychophysiological effects on alertness.
Author(s)
VE Soto Magán, M Andersen
Publication Year
2019
Number of Citations
2
Related Publications
Workplace Performance
- Acute alerting effects of light: A systematic literature review
- Effects of artificial dawn and morning blue light on daytime cognitive performance, well-being, cortisol and melatonin levels
- Can light make us bright? Effects of light on cognition and sleep
- Kruithof's rule revisited using LED illumination
- Shining light on memory: Effects of bright light on working memory performance
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The two‐process model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice