Did You Know? Neurological and Psychiatric Disorders Sleep 24-Hour Service: The Circadian Clock December 12, 2012March 5, 2017 Kate Fehlhaber circadian clock, clock genes, cortisol, depression, jet lag, melatonin, SAD, SCN, seasonal affective disorder, sleep-wake cycle, suprachiasmatic nucleus Have you ever woken up minutes before your alarm sounded? This strange phenomenon isn’t just a bizarre coincidence! Like most living things, we have an extremely accurate and powerful internal… Read more