Effects of light on human circadian rhythms, sleep and mood.
Humans live in a 24-hour environment, in which light and darkness follow a diurnal pattern. Our circadian pacemaker, the suprachiasmatic nuclei (SCN) in the hypothalamus, is entrained to the 24-hour solar day via a pathway from the retina and synchronises our internal biological rhythms.
Effects of light on human circadian rhythms, sleep and mood. Read More »