Literature has occasionally reported acute effects of office illuminance on cognitive performance during daytime. The current study was conducted to systematically investigate whether the type of task and level of task difficulty moderate the effect of daytime illuminance on cognitive functioning. Thirty healthy participants were assigned to high (∼1036 lux at eye level; melanopic EDI = 904 lux) vs. low (∼108 lux at eye level, melanopic EDI = 87 lux) illuminance (at 6500 K) during working hours, in which participants were tested on both easy and difficult versions of tasks probing sustained attention, response inhibition, conflict monitoring and working memory. Subjective sleepiness and mood were also measured. Results revealed that exposure to high vs. low illuminance significantly improved speed on the response inhibition task, and accuracy and speed on the working memory tasks. Moreover, when effects arose, these were moderated by task difficulty, consistently showing more pronounced effects for easy than for difficult trials. Notably, subjective sleepiness and negative mood remained unaffected by illuminance, and no statistically significant effects emerged for sustained attention and conflict monitoring. This study demonstrates that the diurnal cognitive effects of illuminance may be moderated by both types of cognitive task and task difficulty.
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References
1.
van BommelWJMvan den BeldGJ. Lighting for work: a review of visual and biological effects. Lighting Research & Technology2004; 36: 255–266.
2.
van BommelWJM. Non-visual biological effect of lighting and the practical meaning for lighting for work. Applied Ergonomics2006; 37: 461–466.
3.
Van DuijnhovenJAartsMPJAriesMBCRosemannALPKortHSM. Systematic review on the interaction between office light conditions and occupational health: elucidating gaps and methodological issues. Indoor and Built Environment2019; 28: 152–174.
4.
BoycePVeitchJANewshamGRJonesCCHeerwagenJMyerMHunterCM. Lighting quality and office work: two field simulation experiments. Lighting Research & Technology2006; 38: 191–223.
5.
SmoldersKCHJde KortYAW. Bright light and mental fatigue: effects on alertness, vitality, performance and physiological arousal. Journal of Environmental Psychology2014; 39: 77–91.
6.
VeitchJAStokkermansMGMNewshamGR. Linking lighting appraisals to work behaviors. Environment and Behavior2013; 45: 198–214.
7.
de KortYAWVeitchJA. From blind spot into the spotlight: Introduction to the special issue ‘Light, lighting, and human behaviour’. Journal of Environmental Psychology2014; 39: 1–4.
8.
VandewalleGGaisSSchabusMBalteauECarrierJDarsaudASterpenichVAlbouyGDijkDJMaquetP. Wavelength-dependent modulation of brain responses to a working memory task by daytime light exposure. Cerebral Cortex2007; 17: 2788–2795.
9.
LockleySWEvansEEScheerFABrainardGCCzeislerCAAeschbachD. Short-wavelength sensitivity for the direct effects of light on alertness, vigilance, and the waking electroencephalogram in humans. Sleep2006; 29: 161–168.
10.
VandewalleGMaquetPDijkD. Light as a modulator of cognitive brain function. Trends in Cognitive Sciences2009; 13: 429–438.
11.
Lucas RJ, Lall GS, Allen AE, Brown TM. How rod, cone, and melanopsin photoreceptors come together to enlighten the mammalian circadian clock. In Progress in Brain Research. New York: Elsevier, 2012, pp. 1–18.
12.
FiskASTamSKBrownLAVyazovskiyVVBannermanDMPeirsonSN. Light and cognition: roles for circadian rhythms, sleep, and arousal. Frontiers in Neurology2018; 9: 56–56.
13.
CajochenC. Alerting effects of light. Sleep Medicine Reviews2007; 11: 453–464.
14.
ChangAScheerFACzeislerCAAeschbachD. Direct effects of light on alertness, vigilance, and the waking electroencephalogram in humans depend on prior light history. Sleep2013; 36: 1239–1246.
15.
YangJRuTChenQMaoTJiYZhouG. The effects of ambient light on task switching depend on the chronotype. Lighting Research & Technology2019; 51: 544–556.
16.
SmoldersKCHJde KortYAWCluitmansPJM. A higher illuminance induces alertness even during office hours: findings on subjective measures, task performance and heart rate measures. Physiology & Behavior2012; 107: 7–16.
17.
HuibertsLMSmoldersKCHJDe KortYAW. Seasonal and time-of-day variations in acute non-image forming effects of illuminance level on performance, physiology, and subjective well-being. Chronobiology International2017; 34: 827–844.
18.
GabelVReichertCFMaireMSchmidtCSchlangenLJKolodyazhniyVGarbazzaCCajochenCViolaAU. Differential impact in young and older individuals of blue-enriched white light on circadian physiology and alertness during sustained wakefulness. Scientific Reports2017; 7: 7620–7620.
19.
RuTde KortYAWSmoldersKCHJChenQZhouG. Non-image forming effects of illuminance and correlated color temperature of office light on alertness, mood, and performance across cognitive domains. Building and Environment2019; 149: 253–263.
20.
LeichtfriedVMair-RaggautzMSchaefferVHammerer-LercherAMairGBartenbachCCanazeiMSchobersbergerW. Intense illumination in the morning hours improved mood and alertness but not mental performance. Applied Ergonomics2015; 46: 54–59.
21.
MinBJungYKimEParkJY. Bright illumination reduces parietal EEG alpha activity during a sustained attention task. Brain Research2013; 1538: 83–92.
22.
ParkJYMinBJungYPakHJeongYKimE. Illumination influences working memory: an EEG study. Neuroscience2013; 247: 386–394.
23.
SmoldersKCHJde KortYAW. Investigating daytime effects of correlated colour temperature on experiences, performance, and arousal. Journal of Environmental Psychology2017; 50: 80–93.
24.
SoumanJLTingaAMTe PasSFvan EeRVlaskampBNS. Acute alerting effects of light: a systematic literature review. Behavioural Brain Research2018; 337: 228–239.
25.
LokRSmoldersKCHJBeersmaDGMde KortYAW. Light, alertness, and alerting effects of white light: a literature overview. Journal of Biological Rhythms2018; 33: 589–601.
26.
HuibertsLMSmoldersKCHJde KortYAW. Non-image forming effects of illuminance level: exploring parallel effects on physiological arousal and task performance. Physiology & Behavior2016; 164: 129–139.
27.
CajochenCFreyburgerMBasishviliTGarbazzaCRudzikFRenzCKobayashiKShirakawaYStefaniOWeibelJ. Effect of daylight LED on visual comfort, melatonin, mood, waking performance and sleep. Lighting Research & Technology2019; 51: 1044–1062.
28.
Phipps-NelsonJRedmanJRDijkDJRajaratnamSMW. Daytime exposure to bright light, as compared to dim light, decreases sleepiness and improves psychomotor vigilance performance. Sleep2003; 26: 695–700.
29.
SleegersPJCMoolenaarNMGaletzkaMPruynATHSarroukhBEDer ZandeBV. Lighting affects students’ concentration positively: findings from three Dutch studies. Lighting Research & Technology2013; 45: 159–175.
30.
BaekHMinB. Blue light aids in coping with the post-lunch dip: an EEG study. Ergonomics2015; 58: 803–810.
31.
SanthiNGroegerJAArcherSGimenezMCSchlangenLJMDijkD. Morning sleep inertia in alertness and performance: effect of cognitive domain and white light conditions. PLoS One2013; 8: e79688–e79688.
32.
KnezIKersC. Effects of indoor lighting, gender, and age on mood and cognitive performance. Environment and Behavior2000; 32: 817–831.
33.
HuibertsLMSmoldersKCHJde KortYAW. Shining light on memory: effects of bright light on working memory performance. Behavioural Brain Research2015; 294: 234–245.
34.
DauratAAguirreAForetJGonnetPKeromesABenoitO. Bright light affects alertness and performance rhythms during a 24-h constant routine. Physiology & Behavior1993; 53: 929–936.
35.
SmoldersKCHJde KortYAWvan den BergSM. Daytime light exposure and feelings of vitality: results of a field study during regular weekdays. Journal of Environmental Psychology2013; 36: 270–279.
36.
LokRWoeldersTGordijnMCMHutRABeersmaDGM. White light during daytime does not improve alertness in well-rested individuals. Journal of Biological Rhythms2018; 33: 637–648.
37.
SmoldersKCHJPeetersSTVogelsIMLCde KortYAW. 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 Rhythms2018; 33: 649–661.
38.
RoennebergTWirz-JusticeAMerrowM. Life between clocks: daily temporal patterns of human chronotypes. Journal of Biological Rhythms2003; 18: 80–90.
39.
CIE. System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light. Vienna, 2018.
40.
LucasRJPeirsonSNBersonDMBrownTMCooperHMCzeislerCAFigueiroMGGamlinPDLockleySWOhaganJ. Measuring and using light in the melanopsin age. Trends in Neurosciences2014; 37: 1–9.
41.
BalkinTJBliesePDBelenkyGSingHCThorneDRThomasMLRedmondDPRussoMBWesenstenNJ. Comparative utility of instruments for monitoring sleepiness-related performance decrements in the operational environment. Journal of Sleep Research2004; 13: 219–227.
42.
ChuahYMLVenkatramanVDingesDFCheeMWL. The neural basis of interindividual variability in inhibitory efficiency after sleep deprivation. The Journal of Neuroscience2006; 26: 7156–7162.
43.
EriksenBAEriksenCW. Effects of noise letters upon the identification of a target letter in a nonsearch task. Perception & Psychophysics1974; 16: 143–149.
44.
NagelsGGeentjensLKosDVleugelsLD′hoogheMBAschPVVuylstekeKDe DeynPP. Paced visual serial addition test in multiple sclerosis. Clinical Neurology and Neurosurgery2005; 107: 218–222.
45.
BraverTSCohenJDNystromLEJonidesJSmithEENollDC. A parametric study of prefrontal cortex involvement in human working memory. NeuroImage1996; 5: 49–62.
46.
RuTChenQYouJZhouG. Effects of a short midday nap on habitual nappers’ alertness, mood and mental performance across cognitive domains. Journal of Sleep Research2019; 28: e12638–e12638.
47.
ÅkerstedtTGillbergM. Subjective and objective sleepiness in the active individual. International Journal of Neuroscience1990; 52: 29–37.
48.
WatsonDClarkLATellegenA. Development and validation of brief measures of positive and negative affect: the PANAS scales. Journal of Personality and Social Psychology1988; 54: 1063–1070.
49.
FlynnJESpencerTJMartyniukOHendrickC. Interim study of procedures for investigating the effect of light on impression and behavior. Journal of the Illuminating Engineering Society1973; 3: 87–94.
50.
MünchMNowozinCRegenteJBesFDe ZeeuwJHädelSWahnschaffeAKunzD. Blue-enriched morning light as a countermeasure to light at the wrong time: effects on cognition, sleepiness, sleep, and circadian phase. Neuropsychobiology2016; 74: 207–218.
51.
HeathMSutherlandCBartelKGradisarMWilliamsonPLovatoNMicicG. Does one hour of bright or short-wavelength filtered tablet screenlight have a meaningful effect on adolescents’ pre-bedtime alertness, sleep, and daytime functioning?Chronobiology International2014; 31: 496–505.
52.
GabelVMaireMReichertCChellappaSLSchmidtCHommesVCajochenCViolaA. Dawn simulation light impacts on different cognitive domains under sleep restriction. Behavioural Brain Research2015; 281: 258–266.
53.
RügerMGordijnMCMBeersmaDGMde VriesBDaanS. Time-of-day-dependent effects of bright light exposure on human psychophysiology: comparison of daytime and nighttime exposure. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology2006; 290: R1413–R1420.
54.
WilhelmBWeckerlePDurstWFahrCRöckR. Increased illuminance at the workplace: does it have advantages for daytime shifts?Lighting Research & Technology2010; 43: 185–199.
55.
AveryDHKizerDBolteMAHelleksonCJ. Bright light therapy of subsyndromal seasonal affective disorder in the workplace: morning vs afternoon exposure. Acta Psychiatrica Scandinavica2001; 103: 267–274.
56.
PartonenTLonnqvistJ. Bright light improves vitality and alleviates distress in healthy people. Journal of Affective Disorders2000; 57: 55–61.
57.
ChellappaSLSteinerROelhafenPCajochenC. Sex differences in light sensitivity impact on brightness perception, vigilant attention and sleep in humans. Scientific Reports2017; 7: 14215–14215.
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