Multivariate analysis of subjective evaluation of indoor lighting environment

Shen, Jingyun; Lian, Zhiwei

doi:10.1016/j.foar.2021.02.006

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…Although we tested the interaction effect of CCT and illuminance level and tried to identify the correlation between CCT and illuminance level, we found no significant effect ( p = .759, p = .731). This result was consistent with the research results of Shen and Lian (2021) who found that the effects of CCT and illuminance level were independent of each other in a multivariate analysis of the subjective evaluation of indoor lighting environment. This might be because of the small number of samples collected in this experiment as well as factors such as fatigue, alertness, and other factors being too distinct in consideration of the excessively long experimentation time of each subject.…”

Section: Discussionsupporting

confidence: 92%

Effect of correlated color temperature and illuminance on sustained attention collected via electroencephalography signals

Feng

Jiang

2023

Hum Ftrs & Erg Mfg Svc

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This study aimed to explore the differences in the subjects' sustained attention under the impact of nine lighting conditions consisting of the combination of three commonly used correlated color temperature (CCT) (3300 K, 4300 K, and 5300 K) and illuminance levels (300 lx, 500 lx, and 750 lx) to provide guidance on the adjustment of CCT and illuminance level parameters for indoor lighting. We selected 24 physically and mentally healthy university students (12 male and 12 female) as the experimental subjects. The subjects were required to perform sustained attention to response task (SART) activities under the nine different lighting conditions and collected the alpha (α) waves (8–12 Hz) from the electroencephalography signals. Subsequently, the mean power spectral density of the α waves and various SART parameters were analyzed and tested. Finally, the effects of different CCT and illuminance levels on the subjects' attention were compared. With the increase in CCT, the attention level tended to increase linearly, whereas the attention level was the lowest at 300 lx and the highest at 500 lx and appeared as an inverted “U” shape. The subjects' attention level was the highest at the combination of CCT of 5300 K and illuminance level of 500 lx and the lowest at the combination of CCT of 3300 K and illuminance level of 500 lx. These results provide important data to elucidate the impact of lighting condition on attention.

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Section: Discussionsupporting

confidence: 92%

Effect of correlated color temperature and illuminance on sustained attention collected via electroencephalography signals

Feng

Jiang

2023

Hum Ftrs & Erg Mfg Svc

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“…In addition, the increase in positive luminous environment appraisal in Scene 4 (186 lx, "m" shape) further emphasizes the primary effect of illuminance on satisfaction. This is consistent with previous research showing that higher illuminance levels correspond with more positive lighting satisfaction [10,52].…”

Section: Discussionsupporting

confidence: 93%

The Effects of Eye Illuminance Distribution in the Horizontal Field of View on Human Performance in a Home Paper-Based Learning Situation

Luo,

Zhao,

Zhang

et al. 2024

Buildings

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Previous studies have focused on task/ambient illumination for visual effects and eye illumination for non-visual effects. In this context, eye illumination within the non-visual realm was defined as vertical non-visual eye illuminance. Considering the functional specificity of central vision and peripheral vision, this study aims to explore whether the distribution of eye illuminance in the horizontal field of view (FOV) affects human performance in home paper-based learning settings. In this study, a within-subject design was used to investigate the effects of eye illuminance distribution on mental perception, task performance, and physiological health while maintaining constant task illuminance and correlated color temperature (CCT). The findings revealed that eye illuminance and its distribution in the horizontal FOV had complex effects on visual fatigue, Landolt ring performance, heart rate variability, and luminous environment appraisal. A relatively optimal lighting configuration was suggested—Scene 4, which was characterized by an eye illuminance level in central FOV of 186 lx and an “m” shaped eye illuminance distribution pattern. This indicates the importance of considering eye illuminance distribution in the horizontal FOV, rather than solely focusing on vertical eye illuminance.

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“…Although we conducted an interaction effect test on CCT and illuminance level, trying to find the relationship between CCT and illuminance level, there was no significant effect. This result was consistent with the research results of Shen et al [43], who found that the influence of CCT and illuminance level was independent from each other in the multivariate analysis of subjective evaluation of indoor lighting environment. Other factors may also account for this result, such as small number of samples of subjects in this experiment, fatigue and alertness caused by the long experiment time and the limited division of CCT and illuminance level.…”

Section: Discussionsupporting

confidence: 93%

The Effect of Correlated Color Temperature and Illumination Level of LED Lighting on Visual Comfort during Sustained Attention Activities

Feng

Jiang

et al. 2023

Sustainability

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LED lighting has been widely used in various scenes, but there are few studies on the impact of LED lighting on visual comfort in sustained attention tasks. This paper aims to explore the influence of correlated color temperature (CCT) and illuminance level in LED lighting parameters on human visual comfort. We selected 46 healthy college students (23 male and 23 female). The ages ranged from 22 to 26 years old (average age was 24.2 years). Electroencephalogram (EEG) signals, sustained attention to response test (SART) parameters and subjective evaluation parameters of subjects performing sustained attention tasks under LED lighting were obtained. The results under different conditions were compared, and the effects of experimental lighting parameters on visual comfort were discussed. The results showed that the LED lighting with CCT of 3300 K and illuminance of 300 lx was more comfortable than other combined conditions. In the subjective perception of subjects, 4000 K CCT also had good visual comfort evaluation and caused good task performance. Therefore, our study showed that in sustained attention tasks, when LED lighting conditions were CCT of 3300 and 4300 K and illuminance level was 300 lx, the visual comfort of the subjects was better.

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Multivariate analysis of subjective evaluation of indoor lighting environment

Cited by 8 publications

References 32 publications

Effect of correlated color temperature and illuminance on sustained attention collected via electroencephalography signals

Effect of correlated color temperature and illuminance on sustained attention collected via electroencephalography signals

The Effects of Eye Illuminance Distribution in the Horizontal Field of View on Human Performance in a Home Paper-Based Learning Situation

The Effect of Correlated Color Temperature and Illumination Level of LED Lighting on Visual Comfort during Sustained Attention Activities

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