Month: December 2014

Philae and Rosetta asked me to pass this along…

Blue Light, Circadian Vision, and Life after Dark

The master circadian clock, located in the brain’s suprachiasmatic nucleus (SCN), helps us sync to the sun-earth 24-hr cycle, for wakefulness during the day and a good night’s sleep after dark.  Blue light (i.e., ~460-480 nm), detected by the eye’s melanopsin