2-Minute Neuroscience: Pineal Gland

Click Here: Official pineal guardian x Website

Click Here: Official pineal guardian X Website

Click Here: Official Pineal Guardian X Website

The pineal gland is a pine cone shaped structure located in the diencephalon whose main function is the secretion of melatonin, a hormone that is best known for its role in regulating circadian rhythms. The pineal gland secretes melatonin throughout the 24-hour cycle, with secretion being highest in the middle of the night and lowest during daylight hours. In this video, I discuss the pineal gland and melatonin secretion, including 24-hour patterns of melatonin secretion and how the pineal gland uses signals from the retina about how much light is in the environment to determine what the time of day is.

**CORRECTION** On the chart that appears at :34, the last time on the x-axis should be 12 PM, not AM.

For an article (on my website) that explains the pineal gland, click this link:

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📚Your Brain, Explained: What Neuroscience Reveals About Your Brain and its Quirks:

📚Bizarre: The Most Peculiar Cases of Human Behavior and What They Tell Us About How the Brain Works:

TRANSCRIPT:
Welcome to 2 minute neuroscience, where I simplistically explain neuroscience topics in 2 minutes or less. In this installment I will discuss the pineal gland.

The pineal gland was given its name because it has a pine-cone like shape. Unliked most brain structures, the pineal gland is unpaired, meaning there is only one. It sits directly on the midline of the brain. The function most linked to the pineal gland is the secretion of a hormone called melatonin, which is best known for its role in regulating circadian rhythms.

The pineal gland is made up of secretory cells called pinealocytes, which secrete melatonin throughout the 24-hour cycle. Secretion is highest in the middle of the night. It begins to decrease as it gets closer to dawn and is lowest during daylight hours.

This schedule of melatonin secretion is regulated by signals from the retina about light in the environment, which travel to a nucleus in the hypothalamus called the suprachiasmatic nucleus and then via an indirect route to the pineal gland. The main function of the suprachiasmatic nucleus is to control circadian rhythms, and in addition to sending information about ambient lighting to the pineal gland, the suprachiasmatic nucleus also uses levels of melatonin as a signal to provide information about the time of day.

Because melatonin levels are highest during the hours of darkness, melatonin activity can be used as a signal that circadian rhythms should be in their nocturnal stage. If melatonin levels are high and someone is still wide awake, it is an indication circadian rhythms are not in sync. This might happen, for example, after flying across several time zones. In this case, melatonin is used by the suprachiasmatic nucleus as a signal to get circadian rhythms back on track.

Due to its close association with nighttime and circadian rhythms, melatonin has also been investigated as playing a role in promoting sleep, but the true relationship between melatonin and sleep is still unclear.

References:

Dora Sapède, & Elise Cau (2013). The Pineal Gland from Development to Function Current Topics in Developmental Biology DOI: 10.1016/B978-0-12-416021-7.00005-5

Click Here: Official Pineal Guardian X Website

Click Here: Official Pineal Guardian X Website

Click Here: Official Pineal Guardian X Website

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44 Comments

  1. Row row row your boat gently down the stream merily merily merily merily life is but a dream. When the pineal gland is fully activated life isore like a dream as you brain is literally swithced on. There is a reason they use a light bulb to express new ideas.

  2. I just notice the increase at night times, and the decrease in the day time.

    Question?:
    What if you dont travel anywhere but it still happens when the nocturnal one and the other one are the same, it happends at day time and night times.

    Also what if the frequency sound and vibration rhythm is un equal?

    Can it be dangerous and cayse a catastrophic mental state of consciousness.

    And if you dont know that answer can you just stfu respectfully im in the middle of something important to the world.

  3. I was told a decade ago that my pineal gland is calcified. Recently after a sleep study they found I have a problem with REM sleep, I wonder if it’s connected

  4. I imagine it must be super annoying for medical students trying to study the pineal gland and every time they google it they get woowoo stuff

  5. If you like spiritual content in scientic terms. I invite you to my channel. We will talk about foods and rare supplements they dont want you to know about.. and ways to incline spiritualy,physicaly & mentally

  6. So, than spiritualist have misinterpret their vision, right? Spiritual activity in the mind would be more regulated by the thalamus, in conjunction with activity from the cerebral cortex, than the penial gland, or "third eye", as they call it. It is in the same reason, so its easy to understand why they could get the impression that thats where that type of actuvity is happening. The thalamus from what i have come to understand is directly responsible for conscious activity, and works with the cerebral cortex in structuring of that consciousness.

  7. I am a graduate of several Berkeley Psychic Institutes programs. I spent about $20000 over the years. Since April 2022, unwillingly I got on a mental torturing system while unconscious, I paid extra $1000 to Renaau Brewster as they requested over the phone. This system has been creating weird images n voices in my space except when I'm asleep. It's very dangerous as I involuntary dropping stuff in the kitchen n I was pushed by invisible hands while walking in public. They told me I should vent online on a regular basis, I was told at times the system is a Russian or CIA spy training system that mostly protects only white and married graduates, as the Russian system dislikes unmarried minorities, especially single male Buddhist !! One of the evidence is that the main Berkeley Psychic Institute building sold to a Tibetan community!

  8. The god antenna, being purposely Calcified by the fluoride in our water system.
    It's unbelievable because it's a super toxic ingredient.

  9. I had sleeping problems for a while so I would take melatonin as a sleeping aid for many years. I decided to stop taking it a few years ago, but if I ever use it again I get anxiety to fall asleep and horrific nightmares and sleep paralysis.

  10. Wonder if this is part of the uncomfortable reaction to daylight savings time. And perhaps why I get so sleepy at 6 pm in the winter when it’s dark as night at dinner time ☺️

  11. Pineal gland most affected by aluminum, floride, glycosophate (?), and WIFI – is it a coincidence that for 60yrs this Country has PUSHED and regulated ALUMINUM in our airnto be brrathed into our system, FLOURIDE in our water, GLYCHOSOPHATE (?) In our food,, and WIFI to affect our bodys frequency???

  12. Maybe that's why if you're exposed to near-constant daylight and/or darkness, like in polar environments; you get real weird in the end: maybe that's why you should turn off your light after dark, or at least a half-hour before going to sleep: such near-constant light messes up your melatonin cycle and gets your sleep real bizarre to put it mildly!

  13. we aren’t going to take about the fact the pineal gland also produces dmt in our sleep? learn to meditate and you’ll learn it’s more than what they tell you

  14. Subhanallah the last third of the night is when allah descends to the first heaven waiting for his servants to ask him for forgiveness , mercy, bounty, power, success it is the time of rising power

  15. Melatonin secretion is probably why African or "blacks' are so energetic and fast . Dark skin absorb light while protecting deep tissue from to much harmful sun damage .

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