Relationships between light exposure and aspects of cognitive function in everyday life
Summary
Real-world light exposure, measured with wearable melanopic sensors and a mobile cognitive app, correlates with subjective sleepiness and faster cognitive responses in everyday life. The study shows daytime light exposure and stable daily light patterns relate to improved attention across tasks, with interindividual variability in light sensitivity. Implications include optimizing workplace and educational lighting using personalized, melanopsin-targeted strategies.