The pineal gland is an obscure, mysterious pea-sized organtucked deep inside our skulls. It helps regulate our sleep patternsby secreting a chemical known as melatonin. Although other organsplay a … ...

The pineal gland is a small gland in the center of the brain. It secretes melatonin, which plays a role in the circadian rhythms or body clock. It may also affect bone metabolism, mental health ...

The pineal gland produces several hormones. One of these, melatonin, helps regulate the body’s internal clock, including the sleep-wake cycle. The pineal gland may also help regulate female ...

Your body clock regulates hormones that impact mood, metabolism, and sleep. ... As daylight fades, your pineal gland receives signals to begin producing melatonin, ...

Descartes' (1596-1650) idea of vision, [1692]. The passage of nervous impulses from the eye to the pineal gland and so to the muscles. From Rene Descartes' Opera Philosophica (Tractatus de homine ...

As the shadows lengthen and the sun sinks into the west, darkness gently falls. Quiet settles over the land, interrupted only by the theme song of "The O'Reilly Factor." Walking ...

The pineal gland releases hormones such as melatonin, which helps regulate the body clock, but some people believe it may produce a psychedelic substance called DMT.

Until now, the specific neurobiology of how our circadian clocks keep track of the seasons has been a mystery. Recently, researchers identified how circadian rhythms synchronize with the seasons.

If you're slow to get going in the morning, your chronotype—or your body clock's natural sleep cycle—might be an owl, named for the mostly nocturnal animals like this barred owl sleeping in a ...