Wavelength-dependent modulation of brain responses to a working memory task by daytime light exposure
Open accessAbstract
In addition to classical visual effects, light elicits nonvisual brain responses, which profoundly influence physiology and behavior. These effects are mediated in part by melanopsin-expressing light-sensitive ganglion cells that, in contrast to the classical photopic system that is maximally sensitive to green light (550 nm), is very sensitive to blue light (470-480 nm). At present, there is no evidence that blue light exposure is effective in modulating nonvisual brain activity related to complex cognitive tasks. Using functional magnetic resonance imaging, we show that, while participants perform an auditory working memory task, a short (18 min) daytime exposure to blue (470 nm) or green (550 nm) monochromatic light (3 x 10(13) photons/cm2/s) differentially modulates regional brain responses. Blue light typically enhanced brain responses or at least prevented the decline otherwise observed following green light exposure in frontal and parietal cortices implicated in working memory, and in the thalamus involved in the modulation of cognition by arousal. Our results imply that monochromatic light can affect cognitive functions almost instantaneously and suggest that these effects are mediated by a melanopsin-based photoreceptor system.
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Light may have a modulatory effect on these anatomical structures, thus impacting on executive brain responses.
“Light may have a modulatory effect on these anatomical structures, thus impacting on executive brain responses [49].”
From Dawn simulation light impacts on different cognitive domains under sleep restriction (2015) · cites this paper as [49]
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- Authors
- Vandewalle, G., Gais, S., Schabus, M., Balteau, E., Carrier, J., Darsaud, A., Sterpenich, V., Albouy, G., Dijk, D. J., & Maquet, P.
- Affiliations
- University of Liège (BE)
- Université de Montréal (CA)
- University of Surrey (GB)
- Venue
- Cerebral Cortex
- Publisher
- Oxford University Press (OUP)
- Published
- 2007-04-02
- Volume
- 17
- Issue
- 12
- Pages
- 2788-2795
- ISSN
- 1047-3211 (ISSN-L)
- 1460-2199
- OpenAlex
- W2105604325
- Cited by
- 277
- References
- 57
- Citations by year
- 2026: 18 · 2025: 12 · 2024: 27 · 2023: 20 · 2022: 12 · 2021: 22 · 2020: 16 · 2019: 10 · 2018: 15 · 2017: 16 · 2016: 16 · 2015: 9 · 2014: 19 · 2013: 15 · 2012: 11
- FWCI
- 3.81
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Cerebral Cortex (publishedVersion)
- PubMed (publishedVersion)
- Open Research (University of Surrey) (submittedVersion)
- Surrey Research Insight Open Access (The University of Surrey) (submittedVersion)
- Lirias (KU Leuven) (submittedVersion)
- ORBi (University of Liège) (submittedVersion, other-oa)
- Funders
- Wellcome Trust (GR069714MA)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
- Keywords
- blue light, green light, melanopsin, working memory, monochromatic light, thalamus, frontal cortex, parietal cortex, arousal, cognitive modulation
- MeSH terms
- Adaptation, Physiological, Adolescent, Adult, Attention, Cerebral Cortex, Circadian Rhythm, Cognition, Female, Humans, Light, Male, Memory, Short-Term, Photic Stimulation, Radiation Dosage, Sunlight
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