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Keyword: sleepdeficiency

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  • Perspective: Casting light on sleep deficiency

    05/24/2013 11:34:31 AM PDT · by neverdem · 14 replies
    Nature ^ | 22 May 2013 | Charles A. Czeisler
    There are many reasons why people get insufficient sleep in our 24/7 society, from early starts at work or school, or long commutes, to caffeine-rich food and drink. But the precipitating factor is an often unappreciated, technological breakthrough: the electric light. Without it, few people would use caffeine to stay awake at night. And light affects our circadian rhythms more powerfully than any drug. Just as the ear has two functions (hearing and balance), so too does the eye. First, rods and cones enable sight; and second, intrinsically photosensitive retinal ganglion cells (ipRGCs) containing the photopigment... --snip-- The US Institute...