Sleeping, Cognitive Performance, and Light (02-09-24)
Nie and colleagues evaluated lighting’s influence on sleep quality and cognitive performance; participants in their study were 18 to 25 years old. The researchers reported that they “optimized and fabricated a four-channel mixed white light with peak wavelengths of 429, 523, 591, and 621 nm. Comparing with common white light emitting diode (LED) (5798 K, 212.7 lx), the mixed white light has lower correlated color temperature (CCT) (2799 K), higher illuminance (356.2 lx), similar melanopic illuminance, and better color fidelity. . . .