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MysticWino
anarchist fringe monkey boddhisatva
      
Date Joined May 2007
Total Posts : 1422
| Posted 5/9/2008 4:06 PM (GMT -4) |   | | | |
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crystalwizard
Forum Moderator
Date Joined Nov 2006
Total Posts : 4097
| Posted 5/9/2008 6:22 PM (GMT -4) | | I dunno about protecting them from psychic whatever, but it sure wouldn't make them healthy if they did that. Here's a good info page on what it does:
www.becomehealthynow.com/article/bodyendocrine/737/
Pineal Gland Functions
Hormones
The pineal gland contains a number of peptides, including GnRH, TRH, and vasotocin, along with a number of important neurotransmitters such as somatostatin, norepinephrine, serotonin, and histamine. The major pineal hormone, however, is melatonin, a derivative of the amino acid tryptophan. Melatonin was first discovered because it lightens amphibian skin, an effect opposite to that of melanocyte-stimulating hormone of the anterior pituitary. Secretion of melatonin is enhanced whenever the sympathetic nervous system is stimulated. Of greater interest, however, is the fact that secretion increases soon after an animal is placed in the dark; the opposite effect takes place immediately upon exposure to light. Its major action, well documented in animals, is to block the secretion of GnRH by the hypothalamus and of gonadotropins by the pituitary. While it was long thought that a decrease in melatonin secretion heralded the onset of puberty, this hypothesis cannot be supported by studies in humans. It is possible that the pineal contains an as yet unidentified hormone that serves that function.
Melotonin is the only hormone secreted by the pineal gland. (The pineal gland is a tiny endocrine gland situated at the centre of the brain.) Melatonin was discovered in 1958 by Aaron B. Lerner and other researchers working at Yale University. Melatonin is produced in humans, other mammals, birds, reptiles, and amphibians. It is present in very small amounts in the human body.
Melatonin was previously known to cause the skins of amphibians to blanch, but its functions in mammals remained uncertain until research discoveries in the 1970s and '80s suggested that it regulates both sleeping cycles and the hormonal changes that usher in sexual maturity during adolescence. The pineal gland's production of melatonin varies both with the time of day and with age; production of melatonin is dramatically increased during the nighttime hours and falls off during the day, and melatonin levels are much higher in children under age seven than in adolescents and are lower still in adults. Melatonin apparently acts to keep a child's body from undergoing sexual maturation, since sex hormones such as luteotropin, which play a role in the development of sexual organs, emerge only after melatonin levels have declined. This hypothesis is supported by the fact that children with tumors of the pineal gland often reach sexual maturity unusually early in life, presumably because the pineal's production of melatonin has been hampered. Melatonin also seems to play an important role in regulating sleeping cycles; test subjects injected with the hormone become sleepy, suggesting that the increased production of melatonin coincident with nightfall acts as a fundamental mechanism for making people sleepy. With dawn the pineal gland stops producing melatonin, and wakefulness and alertness ensue. The high level of melatonin production in young children may explain their tendency to sleep longer than adults.
In mammals other than humans melatonin possibly acts as a breeding and mating cue, since it is produced in greater amounts in response to the longer nights of winter and less so during summer. Animals who time their mating or breeding to coincide with favorable seasons (such as spring) may depend on melatonin production as a kind of biological clock that regulates their reproductive cycles on the basis of the length of the solar day.
Never meddle in the affairs of a wizard unless you are soggy and hard to light!
Managing Editor of Flashing Swords
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Despiciblus
Neophyte
Date Joined Jul 2005
Total Posts : 61
| Posted 5/9/2008 9:59 PM (GMT -4) | | In my opinion psychic phenomenon does not exist, so the person’s question has no validity. I’m not trying to argue here, I’m just stating what I believe to be true. 
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Lyn
Adopt
Date Joined Sep 2007
Total Posts : 1197
| Posted 5/9/2008 10:45 PM (GMT -4) | | | | |
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Despiciblus
Neophyte
Date Joined Jul 2005
Total Posts : 61
| Posted 5/9/2008 11:12 PM (GMT -4) | | Of course I believe in brain waves, but I’m skeptical about claims that connect brain waves with “psychic” powers. I’m also fairly certain that the word “psychic” is intended to describe supernatural phenomena: ESP, telepathy, clairvoyance, ect. I don’t believe in those things. Again, I’m not trying to argue here, just expressing an opinion.
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