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4 votes

What is blue light?

Blue light means wavelengths that appear to the human eye as blue when they are presented alone. This light is important for sleep/wake cycle regulation because this is the wavelength that cells that ...
Bryan Krause's user avatar
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3 votes

Does the effect of light on melatonin release adapts to light level over long periods of time?

This paper, for example, shows that indeed, melatonin is suppressed more in the light after a week of dim light exposure compared to after a week of bright light exposure. However, the authors note ...
Bryan Krause's user avatar
  • 46.1k
2 votes

Does sleep duration vary for animals based on time of the year?

Yes, people, as well as animals regulate their drowsiness by light. There's a well known experiment conducted by Michel Suffre on himself in 1972. When he spent a month with no light and no ...
Probably's user avatar
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