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Melanopsin acts as a light sensor that signals the suprachiasmatic nucleus to synchronize the circadian clock and helps regulate sleep-wake cycles.
“these melanopsin cells sense light and then tell the SCN that this is morning and this is time to sync up.”
FoundMyFitness · Jun 2016 · 1 episode · 806K views on this topicExtracted by a model; may misattribute who said what.