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July 30th, 2005

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10:14 pm - Welcome
I originally stuck this extract up while testing the layout, but hey, it makes a good introduction too. There's more on the user info page.

This community is for discussing biological rhythms in humans and how they relate to various conditions. We have a particular interest in light therapy.

From Wikipedia:
Chronobiology is a field of biology that examines time-related phenomena in living organisms. These cycles are important in many essential biological processes that occur in a "scheduled" fashion, such as eating, sleeping, mating, hibernating, migration, and cellular regeneration.

The most important rhythm in chronobiology is the circadian rhythm, which refers to the 24-hour daily biological cycle; however, many other important cycles are also studied, including:

Infradian rhythms, which are long-term cycles, such as the annual migration or reproduction cycles found in certain animals or the monthly menstrual cycle of human females.
Ultradian rhythms, which are short cycles, such as the 90-minute REM cycle in sleep or the 3 hour cycle of growth hormone production. They have periods of less than 24 hours.
Tidal rhythms, commonly observed in marine life, which follow the (roughly) 12-hour transition from high to low tide and back.

Please do not post rants about having a bad time with your illness, or questions such as "am I pregnant?" which would best be discussed elsewhere.

Do let me know if you have any ideas about this community, for instance what to put on the user info page.

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