Impact of personalized lighting on the psychophysical state of a human

Dynamic preset and personalized lighting modes can positively affect the psychophysiological state of office workers. This study compared different approaches to changing the correlated color temperature (preset and selectable). The study analyzed the influence of lighting on the components of human fatigue: mood, activity, well-being, sleep, performance and subjective well-being. The analysis of the experimental data revealed preferences for color temperatures depending on the type of human daily activities. A high degree of influence of the quantity and quality of sleep on the psychophysiological state was revealed. An increase in mood and a decrease in fatigue were observed with personalized lighting. Purely individual dependencies were revealed between the personalized lighting mode and working performance together with mental productivity. The study results show that lighting systems based on individual preferences, in general, have positive effect on the psychophysiological state of the user, providing a quality night’s sleep.