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Infrared light in the bedroom v sleep
#1
I have one or more security cameras in the room in which I sleep. No, I won't tell you why. They have IR illumination LEDs that operate in darkness. The wavelength is in the near infrared. Somewhere between 850 and 980 nanometers.

Although not perceivable by the human visual system (eye, visual cortex, et cetera,) I wonder what effect this light have on sleep via the melatonin pathway. Perhaps although not visible; it is still perceivable.

Thoughts? Or even better, a citation on effects?
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#2
Other than it would creep me out to use a camera in the bedroom, I don't think near infrared has any documented affect on sleep, and it is used by sleep labs as well. If there was an issue, I'm pretty sure it would be discussed in the literature.
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#3
I used IR for months, just to get an idea of how often I rolled over on my back. (camera would take stills every time something moved in the room)

The light sources were very dim (visual spectrum) power output was very low.
Don't think there are any significant effects. Didn't notice anything, anyway.

Hope this helps.

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#4
It seems that, in theory, blue light is what affects melatonin production, so IR is on the other end of the spectrum.
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If it's midnight and a DME tells you it's dark outside, go and check it yourself.
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