Hormone responsible for controlling the circadian rhythym.

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Would constant light or fading light be registered as more wakefulness promoting by the Supra Chiasmatic Nucleus?

During the fall and winter season, a number of people are experiencing Seasonal Affective Disorder. One of the way it has traditionally been treated is with a dedicated lightbox - a very high ...
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How much Melatonin does the Human Body release in the course of a Night? [closed]

I have found multiple sources giving slightly different indications as to the peak Melatonin production in humans. It appears that children between ages 5 and 10 may achieve peak Melatonin/blood ...
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Does melatonin change the appearance of humans?

Melatonin (not to be confused with melanin) was sold as a wonder drug during the 90s. I remember images of mice, which supposedly got a more beautiful fur. I would like to know whether the effect is ...
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Role of Melatonin in Circadian Rhythm

Melatonin regulates the wake-sleep cycle by causing drowsiness and lowering body temperature, but which specific chemical pathways lead to this drowsiness?
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Melatonin production - requires nighttime, or just full darkness?

Is melatonin properly produced in daytime sleep in full darkness? Or does it require only nighttime sleep? Additionally, what other biological implications are there, if any, to daytime sleeping? ...
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266 views

What mechanism suppresses melatonin release in humans?

I'm looking at melanopsin, a photo pigment in the human eye. One of its actions is to trigger suprachiasmatic nuclei SCN to suppress melatonin release. I'm interested in learning what is the exact ...
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Does sleep duration vary for animals based on time of the year?

I'm interested in the sleep patterns of wild animals, that still use sun for controlling their biological clock. Animals entrain their biological clock to the day/night cycle using light as the ...
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Why do you need you room dark for melatonin release?

There is a light pollution movement that says lighting at night obstructs melatonin production. They say: What makes you fall asleep are changes in the level of the hormone melatonin ...
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What is the mechanism by which Melatonin increases dream vividness and intensity in humans?

I'm looking at the wikipedia article on Melatonin and noticed that it mentions vivid dreaming caused by melatonin. I have the "Melatonin and the Biological clock" pamphlet referenced in the article, ...