Confined spaces, characterized by limited natural ventilation, the absence of windows, and restricted access to natural light, present distinct challenges. While most studies focus on lighting's effect on sleep, confined spaces are now more often used for short-term work-rest cycles, especially in office settings. This study explores how lighting conditions affect alertness, cognitive performance, and physiological metrics such as heart rate variability (HRV) during work-rest cycles in confined spaces. Participants performed 2-back tasks, psychomotor vigilance tasks (PVT), and completed subjective scales under six lighting conditions, combining two levels of illuminance (300, 500 lx) and three color temperatures (2800, 5000, 6500 K). Results show higher subjective alertness during work with 300 lx and 5000 K. However, lighting conditions did not significantly affect subjective alertness during rest. Objective alertness was better at 300 lx, with 2800 outperforming 5000 K. Working memory accuracy was higher at 5000 compared with 6500 K, and reaction times were faster under 300 lx. Physiological data remained consistent across lighting conditions. These findings can inform future lighting design and management in confined spaces to improve comfort and efficiency.
| [1] |
Åkerstedt, T., and M. Gillberg. 1990. “Subjective and Objective Sleepiness in the Active Individual.” International Journal of Neuroscience 52, no. 1-2: 29-37. https://doi.org/10.3109/00207459008994241.
|
| [2] |
Albinet, C. T., G. Boucard, C. A. Bouquet, and M. Audiffren. 2010. “Increased Heart Rate Variability and Executive Performance After Aerobic Training in the Elderly.” European Journal of Applied Physiology 109: 617-624. https://doi.org/10.1007/s00421-010-1393-y.
|
| [3] |
Araujo, J., M. J. Rodrigues, O. Postolache, F. Cercas, F. F. Martín, and A. L. Martínez. 2020. “Heart Rate Variability Analysis in Healthy Subjects Under Different Colored Lighting Conditions.” In 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 1-5. IEEE. https://doi.org/10.1109/I2MTC43012.2020.9129619.
|
| [4] |
Ashdown, I.1993. “Near-Field Photometry: A New Approach.” Journal of the Illuminating Engineering Society 22, no. 1: 163-180. https://doi.org/10.1080/00994480.1993.10748029.
|
| [5] |
Askaripoor, T., M. Motamedzadeh, R. Golmohammadi, M. Farhadian, M. Babamiri, and M. Samavati. 2018. “Non-Image Forming Effects of Light on Brainwaves, Autonomic Nervous Activity, Fatigue, and Performance.” Journal of Circadian Rhythms 16: 9. https://doi.org/10.5334/jcr.167.
|
| [6] |
Basner, M., D. Mollicone, and D. F. Dinges. 2011. “Validity and Sensitivity of a Brief Psychomotor Vigilance Test (PVT-B) to Total and Partial Sleep Deprivation.” Acta Astronautica 69, no. 11-12: 949-959. https://doi.org/10.1016/j.actaastro.2011.07.015.
|
| [7] |
Boray, P. F., R. Gifford, and L. Rosenblood. 1989. “Effects of Warm White, Cool White, and Full-Spectrum Fluorescent Lighting on Simple Cognitive Performance, Mood, and Ratings of Others.” Journal of Environmental Psychology 9: 297-308. https://doi.org/10.1016/S0272-4944(89)80011-8.
|
| [8] |
Brainard, G. C., L. K. Barger, R. R. Soler, and J. P. Hanifin. 2016. “The Development of Lighting Countermeasures for Sleep Disruption and Circadian Misalignment During Spaceflight.” Current Opinion in Pulmonary Medicine 22, no. 6: 535-544. https://doi.org/10.1097/MCP.0000000000000329.
|
| [9] |
Burattini, C., L. Piccardi, G. Curcio, F. Ferlazzo, A. M. Giannini, and F. Bisegna. 2019. “Cold LED Lighting Affects Visual but Not Acoustic Vigilance.” Building and Environment 151: 148-155. https://doi.org/10.1016/j.buildenv.2019.01.022.
|
| [10] |
Buschkuehl, M., L. Hernandez-Garcia, S. M. Jaeggi, J. A. Bernard, and J. Jonides. 2014. “Neural Effects of Short-Term Training on Working Memory.” Cognitive, Affective, & Behavioral Neuroscience 14, no. 1: 147-160. https://doi.org/10.3758/s13415-013-0244-9.
|
| [11] |
Caddick, Z. A., K. Gregory, and E. E. Flynn-Evans. 2017. “Sleep Environment Recommendations for Future Spaceflight Vehicles.” International Conference on Human Factors in Transportation International Conference on Applied Human Factors and Ergonomics 484: 923-933. https://doi.org/10.1007/978-3-319-41682-3_76.
|
| [12] |
Cajochen, C.2007. “Alerting Effects of Light.” Sleep Medicine Reviews 11, no. 6: 453-464. https://doi.org/10.1016/j.smrv.2007.07.009.
|
| [13] |
Cajochen, C., D. P. Brunner, K. Kräuchi, P. Graw, and A. Wirz-Justice. 2000. “EEG and Subjective Sleepiness During Extended Wakefulness in Seasonal Affective Disorder: Circadian and Homeostatic Influences.” Biological Psychiatry 47, no. 7: 610-617. https://doi.org/10.1016/S0006-3223(99)00242-5.
|
| [14] |
Chellappa, S. L., M. C. M. Gordijn, and C. Cajochen. 2011. “Can Light Make Us Bright? Effects of Light on Cognition and Sleep.” Progress in Brain Research 190, no. 1: 119-133. https://doi.org/10.1016/B978-0-444-53817-8.00007-4.
|
| [15] |
Chellappa, S. L., R. Lasauskaite, and C. Cajochen. 2017. “In a Heartbeat: Light and Cardiovascular Physiology.” Frontiers in Neurology 8: 541. https://doi.org/10.3389/fneur.2017.00541.
|
| [16] |
Chellappa, S. L., R. Steiner, P. Blattner, P. Oelhafen, T. Götz, and C. Cajochen. 2011. “Non-Visual Effects of Light on Melatonin, Alertness and Cognitive Performance: Can Blue-Enriched Light Keep Us Alert?” PLoS One 6, no. 1: e16429. https://doi.org/10.1371/journal.pone.0016429.
|
| [17] |
Chen, R., M. C. Tsai, and Y. S. Tsay. 2022. “Effect of Color Temperature and Illuminance on Psychology, Physiology, and Productivity: An Experimental Study.” Energies 15, no. 12: 4477. https://doi.org/10.3390/en15124477.
|
| [18] |
Danilenko, K. V., C. Cajochen, and A. Wirz-Justice. 2003. “Is Sleep Per se a Zeitgeber in Humans?” Journal of Biological Rhythms 18, no. 2: 170-178. https://doi.org/10.1177/0748730403251732.
|
| [19] |
Dong, X., Y. Wu, X. Chen, et al. 2021. “Effect of Thermal, Acoustic, and Lighting Environment in Underground Space on Human Comfort and Work Efficiency: A Review.” Science of the Total Environment 786: 147537. https://doi.org/10.1016/j.scitotenv.2021.147537.
|
| [20] |
Dunster, G. P., I. Hua, A. Grahe, et al. 2023. “Daytime Light Exposure Is a Strong Predictor of Seasonal Variation in Sleep and Circadian Timing of University Students.” Journal of Pineal Research 74, no. 2: e12843. https://doi.org/10.1111/jpi.12843.
|
| [21] |
Durak, A., N. C. Olguntürk, C. Yener, D. Güvenç, and Y. Gürçınar. 2007. “Impact of Lighting Arrangements and Illuminances on Different Impressions of a Room.” Building and Environment 42, no. 10: 3476-3482. https://doi.org/10.1016/j.buildenv.2006.10.048.
|
| [22] |
Fotios, S. A.2001. “Lamp Colour Properties and Apparent Brightness: A Review.” Lighting Research and Technology 33, no. 3: 163-178. https://doi.org/10.1177/136578280103300306.
|
| [23] |
Gerhardsson, K. M., and T. Laike. 2021. “User Acceptance of a Personalised Home Lighting System Based on Wearable Technology.” Applied Ergonomics 96: 103480. https://doi.org/10.1016/j.apergo.2021.103480.
|
| [24] |
Gou, Z., B. Gou, D. Chen, et al. 2025. “The Effect of Pre-Sleep Lighting on Melatonin, Sleep and Alertness of the Crews in the Enclosed Cabins in the Evening With the Cumulative Effect of Light.” Building and Environment 267: 112316.
|
| [25] |
Gou, Z., B. Gou, W. Liao, Y. Bao, and Y. Deng. 2023. “Integrated Lighting Ergonomics: A Review on the Association Between Non-Visual Effects of Light and Ergonomics in the Enclosed Cabins.” Building and Environment 243: 110616.
|
| [26] |
Grant, L. K., B. A. Kent, S. A. Rahman, et al. 2024. “The Effect of a Dynamic Lighting Schedule on Neurobehavioral Performance During a 45-Day Simulated Space Mission.” SLEEP Advances 5, no. 1: zpae032. https://doi.org/10.1093/sleepadvances/zpae032.
|
| [27] |
Hanford, N., and M. Figueiro. 2013. “Light Therapy and Alzheimer's Disease and Related Dementia: Past, Present, and Future.” Journal of Alzheimer's Disease 33, no. 4: 913-922. https://doi.org/10.3233/JAD-2012-121645.
|
| [28] |
Hankins, M. W., S. N. Peirson, and R. G. Foster. 2008. “Melanopsin: An Exciting Photopigment.” Trends in Neurosciences 31, no. 1: 27-36. https://doi.org/10.1016/j.tins.2007.11.002.
|
| [29] |
Huiberts, L. M., K. C. Smolders, and Y. A. de Kort. 2016. “Non-Image Forming Effects of Illuminance Level: Exploring Parallel Effects on Physiological Arousal and Task Performance.” Physiology and Behavior 164: 129-139. https://doi.org/10.1016/j.physbeh.2016.05.035.
|
| [30] |
Huiberts, L. M., K. C. H. J. Smolders, and Y. A. W. de Kort. 2015. “Shining Light on Memory: Effects of Bright Light on Working Memory Performance.” Behavioural Brain Research 294: 234-245. https://doi.org/10.1016/j.bbr.2015.07.045.
|
| [31] |
Hygge, S., and I. Knez. 2001. “Effects of Noise, Heat and Indoor Lighting on Cognitive Performance and Self-Reported Affect.” Journal of Environmental Psychology 21, no. 3: 291-299. https://doi.org/10.1006/jevp.2001.0222.
|
| [32] |
Jiang, A., X. Yao, S. Westland, C. Hemingray, B. Foing, and J. Lin. 2022. “The Effect of Correlated Colour Temperature on Physiological, Emotional and Subjective Satisfaction in the Hygiene Area of a Space Station.” International Journal of Environmental Research and Public Health 19, no. 15: 9090. https://doi.org/10.3390/ijerph19159090.
|
| [33] |
Kalsbeek, A., F. A. Scheer, S. Perreau-Lenz, et al. 2011. “Circadian Disruption and SCN Control of Energy Metabolism.” FEBS Letters 585, no. 10: 1412-1426. https://doi.org/10.1016/j.febslet.2011.03.021.
|
| [34] |
Kang, S. Y., N. Youn, and H. C. Yoon. 2019. “The Self-Regulatory Power of Environmental Lighting: The Effect of Illuminance and Correlated Color Temperature.” Journal of Environmental Psychology 62: 30-41. https://doi.org/10.1016/j.jenvp.2019.02.006.
|
| [35] |
Keis, O., H. Helbig, J. Streb, and K. Hille. 2014. “Influence of Blue-Enriched Classroom Lighting on Students' Cognitive Performance.” Trends in Neuroscience and Education 3, no. 3-4: 86-92. https://doi.org/10.1016/j.tine.2014.09.001.
|
| [36] |
Ko, W. H., S. Schiavon, S. Altomonte, et al. 2022. “Window View Quality: Why It Matters and What We Should Do.” Leukos 18, no. 3: 259-267. https://doi.org/10.1080/15502724.2022.2055428.
|
| [37] |
Konstantzos, I., S. A. Sadeghi, M. Kim, J. Xiong, and A. Tzempelikos. 2020. “The Effect of Lighting Environment on Task Performance in Buildings-a Review.” Energy and Buildings 226: 110394. https://doi.org/10.1016/j.enbuild.2020.110394.
|
| [38] |
Kretschmer, V., B. Griefahn, and K. H. Schmidt. 2011. “Bright Light and Night Work: Effects on Selective and Divided Attention in Elderly Persons.” Lighting Research and Technology 43, no. 4: 473-486. https://doi.org/10.1177/1477153511405808.
|
| [39] |
Lasauskaite, R., and C. Cajochen. 2018. “Influence of Lighting Color Temperature on Effort-Related Cardiac Response.” Biological Psychology 132: 64-70. https://doi.org/10.1016/j.biopsycho.2017.11.005.
|
| [40] |
Leveille, C., A. Nixon, J. A. Veitch, and R. Robillard. 2025. “Assessing the Effects of Polychromatic Light Exposure on Heart Rate in Healthy Adults: A Systematic Review Contrasting α-Opic Equivalent Daylight Illuminances.” Leukos 21, no. 2: 1-18. https://doi.org/10.1080/15502724.2024.2438682.
|
| [41] |
Liu, C., J. Li, W. Wang, Q. Zang, X. Wang, and W. Gao. 2024. “A Review of Subjective Evaluation, Physiological Indicators and Cognitive Performance in Indoor Light Environment: The Role of Illuminance and Correlated Color Temperature.” Journal of Building Engineering 89, 110224. https://doi.org/10.1016/j.jobe.2024.110224.
|
| [42] |
Li, Y., W. Fang, B. Guo, and H. Qiu. 2024. “Diurnal Effects of Dynamic Lighting on Alertness, Cognition, and Mood of Mentally Fatigued Individuals in a Daylight Deprived Environment.” Lighting Research and Technology 56, no. 2: 136-155. https://doi.org/10.1177/14771535221138589.
|
| [43] |
Li, Y., W. Fang, H. Qiu, W. Dong, J. Wang, and H. Bao. 2024. “Diurnal Intervention Effects of Electric Lighting on Alertness, Cognition, and Mood in Healthy Individuals: A Systematic Review and Meta-Analysis.” Leukos 20, no. 3: 291-309. https://doi.org/10.1080/15502724.2023.2279946.
|
| [44] |
Li, Y., W. Fang, H. Qiu, and J. Wang. 2024. “The Non-Visual Effects of Correlated Color Temperature on the Alertness, Cognition, and Mood of Fatigued Individuals During the Afternoon.” International Journal of Industrial Ergonomics 101: 103589.
|
| [45] |
Liang, R., M. Kent, R. Wilson, and Y. Wu. 2021. “The Effect of Thermochromic Windows on Visual Performance and Sustained Attention.” Energy and Buildings 236: 110778. https://doi.org/10.1016/j.enbuild.2021.110778.
|
| [46] |
Loh, S., N. Lamond, J. Dorrian, G. Roach, and D. Dawson. 2004. “The Validity of Psychomotor Vigilance Tasks of Less Than 10-Minute Duration.” Behavior Research Methods, Instruments, & Computers 36: 339-346. https://doi.org/10.3758/BF03195580.
|
| [47] |
Luo, X., T. Ru, Q. Chen, Y. Li, Y. Chen, and G. Zhou. 2022. “Influence of Daytime Blue-Enriched Bright Light on Heart Rate Variability in Healthy Subjects.” Chronobiology International 39, no. 6: 826-835. https://doi.org/10.1080/07420528.2022.2040526.
|
| [48] |
Mills, P. R., S. C. Tomkins, and L. J. Schlangen. 2007. “The Effect of High Correlated Colour Temperature Office Lighting on Employee Wellbeing and Work Performance.” Journal of Circadian Rhythms 5: 1-9.
|
| [49] |
Morita, T., and H. Tokura. 1996. “Effects of Lights of Different Color Temperature on the Nocturnal Changes in Core Temperature and Melatonin in Humans.” Applied Human Science 15, no. 5: 243-246. https://doi.org/10.2114/jpa.15.243.
|
| [50] |
Mu, Y. M., X. D. Huang, S. Zhu, et al. 2022. “Alerting Effects of Light in Healthy Individuals: A Systematic Review and Meta-Analysis.” Neural Regeneration Research 17, no. 9: 1929-1936. https://doi.org/10.4103/1673-5374.335141.
|
| [51] |
Muñoz, J. E., F. Pereira, and E. Karapanos. 2016. “Workload Management Through Glanceable Feedback: The Role of Heart Rate Variability.” In In 2016 IEEE 18th International Conference on e-Health Networking, Applications and Services (Healthcom), 1-6. IEEE. https://doi.org/10.1109/HealthCom.2016.7749477.
|
| [52] |
Nie, J., Q. Zou, L. Chen, et al. 2024. “The Lower Correlated Color Temperature With Higher Illuminance Nocturnal Light Environment Improves Cognitive Performance and Sleep Quality.” Building and Environment 251: 111221.
|
| [53] |
Owen, A. M., K. M. McMillan, A. R. Laird, and E. Bullmore. 2005. “N-Back Working Memory Paradigm: A Meta-Analysis of Normative Functional Neuroimaging Studies.” Human Brain Mapping 25, no. 1: 46-59. https://doi.org/10.1002/hbm.20131.
|
| [54] |
Park, B. C., J. H. Chang, Y. S. Kim, J. W. Jeong, and A. S. Choi. 2010. “A Study on the Subjective Response for Corrected Colour Temperature Conditions in a Specific Space.” Indoor and Built Environment 19, no. 6: 623-637. https://doi.org/10.1177/1420326X10383472.
|
| [55] |
Rahman, S. A., B. A. Kent, L. K. Grant, et al. 2022. “Effects of Dynamic Lighting on Circadian Phase, Self-Reported Sleep and Performance During a 45-Day Space Analog Mission With Chronic Variable Sleep Deficiency.” Journal of Pineal Research 73, no. 4: e12826. https://doi.org/10.1111/jpi.12826.
|
| [56] |
Ru, T., Y. A. W. de Kort, K. C. H. J. Smolders, Q. Chen, and G. Zhou. 2019. “Non-Image Forming Effects of Illuminance and Correlated Color Temperature of Office Light on Alertness, Mood, and Performance Across Cognitive Domains.” Building and Environment 149: 253-263. https://doi.org/10.1016/j.buildenv.2018.12.002.
|
| [57] |
Ru, T., M. E. Kompier, Q. Chen, G. Zhou, and K. C. Smolders. 2023. “Temporal Tuning of Illuminance and Spectrum: Effect of a Full-Day Dynamic Lighting Pattern on Well-Being, Performance and Sleep in Simulated Office Environment.” Building and Environment 228: 109842. https://doi.org/10.1016/j.buildenv.2022.109842.
|
| [58] |
Ru, T., K. Smolders, Q. Chen, G. Zhou, and Y. D. Kort. 2021. “Diurnal Effects of Illuminance on Performance: Exploring the Moderating Role of Cognitive Domain and Task Difficulty.” Lighting Research & Technology 53, no. 8: 727-747. https://doi.org/10.1177/1477153521990645.
|
| [59] |
Rüger, M., M. C. Gordijn, B. de Vries, and D. G. Beersma. 2005. “Effects of Diurnal and Nocturnal Bright Light Exposure on Human Performance and Wake EEG.” In Lighting Up the Clock: Effects of Bright Light on Physiological and Psychological States in Humans (Doctoral Dissertation), 61-85. Van Denderen.
|
| [60] |
Sahin, L., and M. G. Figueiro. 2013. “Alerting Effects of Short-Wavelength (Blue) and Long-Wavelength (Red)lights in the Afternoon.” Physiology & Behavior 116: 1-7. https://doi.org/10.1016/j.physbeh.2013.03.014.
|
| [61] |
Scharinger, C., A. Soutschek, T. Schubert, and P. Gerjets. 2015. “When Flanker Meets the n-Back: What EEG and Pupil Dilation Data Reveal About the Interplay Between the Two Central-Executive Working Memory Functions Inhibition and Updating.” Psychophysiology 52, no. 10: 1293-1304. https://doi.org/10.1111/psyp.12500.
|
| [62] |
Seo, H. S., and J. T. Kim. 2015. “The Effect of Illuminance and Color Temperature of LED Lighting on Occupants' Perception and HRV.” KIEAE Journal 15, no. 2: 37-43. https://doi.org/10.12813/kieae.2015.15.2.037.
|
| [63] |
Siraji, M. A., V. Kalavally, A. Schaefer, and S. Haque. 2022. “Effects of Daytime Electric Light Exposure on Human Alertness and Higher Cognitive Functions: A Systematic Review.” Frontiers in Psychology 12: 765750. https://doi.org/10.3389/fpsyg.2021.765750.
|
| [64] |
Smolders, K. C. H. J., and Y. A. de Kort. 2014. “Bright Light and Mental Fatigue: Effects on Alertness, Vitality, Performance and Physiological Arousal.” Journal of Environmental Psychology 39: 77-91. https://doi.org/10.1016/j.jenvp.2013.12.010.
|
| [65] |
Smolders, K. C. H. J., and Y. A. W. De Kort. 2017. “Investigating Daytime Effects of Correlated Colour Temperature on Experiences, Performance, and Arousal.” Journal of Environmental Psychology 50: 80-93. https://doi.org/10.1016/j.jenvp.2017.02.001.
|
| [66] |
Smolders, K. C. H. J., Y. A. W. de Kort, and P. J. M. Cluitmans. 2012. “A Higher Illuminance Induces Alertness Even During Office Hours: Findings on Subjective Measures, Task Performance and Heart Rate Measures.” Physiology and Behavior 107, no. 1: 7-16. https://doi.org/10.1016/j.physbeh.2012.04.028.
|
| [67] |
Souman, J. L., A. M. Tinga, S. F. Te Pas, R. Van Ee, and B. N. Vlaskamp. 2018. “Acute Alerting Effects of Light: A Systematic Literature Review.” Behavioural Brain Research 337: 228-239.
|
| [68] |
Spitschan, M., L. Kervezee, R. Lok, et al. 2023. “ENLIGHT: A Consensus Checklist for Reporting Laboratory-Based Studies on the Non-Visual Effects of Light in Humans.” eBioMedicine 98: 104889. https://doi.org/10.1016/j.ebiom.2023.104889.
|
| [69] |
Sun, C., and Z. Lian. 2016. “Sensitive Physiological Indicators for Human Visual Comfort Evaluation.” Lighting Research and Technology 48, no. 6: 726-741. https://doi.org/10.1177/1477153515624266.
|
| [70] |
Valdez, P., T. Reilly, and J. Waterhouse. 2008. “Rhythms of Mental Performance.” Mind, Brain, and Education 2, no. 1: 7-16. https://doi.org/10.1111/j.1751-228X.2008.00023.x.
|
| [71] |
Vandebos, G.2007. APA Dictionary of Psychology. American Psychological Association.
|
| [72] |
Vethe, D., J. Scott, M. Engstrøm, et al. 2021. “The Evening Light Environment in Hospitals Can Be Designed to Produce Less Disruptive Effects on the Circadian System and Improve Sleep.” Sleep 44, no. 3: zsaa194. https://doi.org/10.1093/sleep/zsaa194.
|
| [73] |
Wang, T., N. Kaida, and K. Kaida. 2023. “Associations of Positive and Negative Perceptions of Outdoor Artificial Light at Night With Nighttime Outdoor Behaviors and Health: Self-Reported Data Analyses on Urban and Suburban Residents in Japan.” Sustainability 15, no. 17: 12938.
|
| [74] |
Wang, T., J. Li, Y. Wang, S. Dai, R. Shao, and L. Hao. 2022. “Active Interventions of Dynamic Lighting on Human Circadian Rhythm and Sleep Quality in Confined Spaces.” Building and Environment 226: 109766. https://doi.org/10.1016/j.buildenv.2022.109766.
|
| [75] |
Wang, T., R. Shao, Y. Wang, J. Li, and L. Hao. 2024. “Impacts of Static Lighting in Confined Spaces on the Circadian Parameters, Alertness, Performance and Well-Being.” Buildings 14, no. 4: 1115.
|
| [76] |
Xiao, J., D. Chen, S. Yu, et al. 2024. “Time-Dependent Effects of Altered Prebedtime Light Exposure in Enclosed Spaces on Sleep Performance Associated with Human States.” Nature and Science of Sleep 16: 1179-1200. https://doi.org/10.2147/NSS.S472988.
|
| [77] |
Ye, M., S. Q. Zheng, M. L. Wang, and M. R. Luo. 2018. “The Effect of Dynamic Correlated Colour Temperature Changes on Alertness and Performance.” Lighting Research and Technology 50, no. 7: 1070-1081. https://doi.org/10.1177/1477153518755617.
|
| [78] |
Zhang, Y., Y. Tu, L. Wang, and Y. Shi. 2024. “Effects of Blue-Enriched White Light With Same Correlated Colour Temperature on Visual Fatigue.” Lighting Research & Technology 56, no. 4: 381-402.
|
| [79] |
Zhu, Y., M. Yang, Y. Yao, et al. 2019. “Effects of Illuminance and Correlated Color Temperature on Daytime Cognitive Performance, Subjective Mood, and Alertness in Healthy Adults.” Environment and Behavior 51, no. 2: 199-230. https://doi.org/10.1177/0013916517738077.
|
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