Ruger, M. et al. Time-of-day-dependent effects of bright light exposure on human psychophysiology: Comparison of daytime and nighttime exposure. Am. J. Physiol.-Regul. Integr. Comp. Physiol. 290, R1413–R1420 (2006).
…
Improving children’s alertness and neuromuscular response by using a blue-enriched white light in the kindergarten playroom
