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dec 7, 1980 - Alfred Lewy

Description:

Exposure to artificial light can suppress melatonin secretions in humans.
People should not be exposed to light at least two hours prior to bed time.
People have variability of sleep onset and variability of sleep need

Added to timeline:

History of Sleep study

ByK
9 Oct 2018
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Date:

dec 7, 1980
Now
~ 44 years ago
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