News tagged with internal clock
Jet Lag Sends Brain Ahead A Time Zone, Leaves Kidneys In Another
Human beings aren't built to cross time zones. After an international flight, it takes days for the body to overcome the fatigue and nausea of jet lag, the biological price of doing business in the modern ...
Medicine & Health / Medical research
Jun 26, 2010 |
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Rare disease reveals new path for creating stem cells
(PhysOrg.com) -- As debilitating as disease can be, sometimes it acts as a teacher. Researchers at Harvard Medical School and the Harvard School of Dental Medicine have found that by mimicking a rare genetic ...
Medicine & Health / Medical research
Nov 21, 2010 |
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Scientists meet to discuss usefulness of GMT
Leading scientists from around the world are meeting in Britain from Thursday to consider a proposal that could eventually see Greenwich Mean Time relegated to a footnote in history.
Nov 03, 2011 |
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Paper sheds new 'light' on fascinating rhythms of the circadian clock
(PhysOrg.com) -- Scientists have long known that interrupting the 24-hour circadian rhythm plays havoc with the lives and health of medical, military and airline personnel, factory employees and travelers.
Biology /
Feb 16, 2009 |
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To Arctic animals, time of day really doesn't matter
In the far northern reaches of the Arctic, day versus night often doesn't mean a whole lot. During parts of the year, the sun does not set; at other times, it's just the opposite. A new study reported online ...
Mar 11, 2010 |
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Plants use circadian rhythms to prepare for battle with insects
In a study of the molecular underpinnings of plants' pest resistance, Rice University biologists have shown that plants both anticipate daytime raids by hungry insects and make sophisticated preparations to ...
Feb 13, 2012 |
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Tick tock: Rods help set internal clocks, biologist says
We run our modern lives largely by the clock, from the alarms that startle us out of our slumbers and herald each new workday to the watches and clocks that remind us when it's time for meals, after-school pick-up and the ...
Medicine & Health / Neuroscience
Sep 17, 2010 |
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Temperature rhythms keep body clocks in sync, researchers find
Researchers at UT Southwestern Medical Center have found that fluctuations in internal body temperature regulate the body's circadian rhythm, the 24-hour cycle that controls metabolism, sleep and other bodily functions.
Medicine & Health / Medical research
Oct 14, 2010 |
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Stop counting sheep (and hitting snooze)
WAKE UP
If you're lucky, you're still sleeping when it's "time to make the doughnuts."
Jan 19, 2009 |
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Research team shows skin stem cells run by circadian clock
(PhysOrg.com) -- Most everyone has heard of the circadian rhythm or the internal clock that people have that tells them when to do things, such as go to sleep. In fact, researchers have actually located where this “clock” ...
Nov 10, 2011 |
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Researchers identify structure of circadian clock protein
(PhysOrg.com) -- Feeling jet-lagged? You may need your internal clock reset. New Cornell research has taken a major step toward treating jet lag and other more serious syndromes by advancing our understanding ...
Nov 15, 2011 |
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'Doomsday' ticks closer on nuclear, climate fears
Global uncertainty on how to deal with the threats of nuclear weapons and climate change have forced the "Doomsday clock" one minute closer to midnight, leading international scientists said Tuesday.
Jan 10, 2012 |
4 / 5 (3) |
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Researchers find potential cause of heart risks for shift workers
(PhysOrg.com) -- Harvard researchers from Brigham and Women’s Hospital (BWH) and colleagues have identified the potential cause of the increased risk for cardiovascular and metabolic disease in shift workers. ...
Medicine & Health / Neuroscience
Mar 03, 2009 |
3.7 / 5 (3) |
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Scientists show that plants have measure of the shortest day
(PhysOrg.com) -- It is not only people who feel the effects of short winter days - new research by the University of Edinburgh and the University of Warwick has shed light on how plants calculate their own winter solstice. ...
Dec 23, 2009 |
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Trigger that prepares animals for the season... whatever the weather
(PhysOrg.com) -- University of Manchester scientists have helped identify the key trigger mechanism in the ‘internal clocks’ of animals which means they are prepared for the season whether snow comes ...
Dec 03, 2010 |
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Circadian rhythm
A circadian rhythm is a roughly-24-hour cycle in the biochemical, physiological or behavioral processes of living entities, including plants, animals, fungi and cyanobacteria (see bacterial circadian rhythms). The term "circadian", coined by Franz Halberg, comes from the Latin circa, "around," and diem or dies, "day", meaning literally "approximately one day." The formal study of biological temporal rhythms such as daily, tidal, weekly, seasonal, and annual rhythms, is called chronobiology.
Circadian rhythms are endogenously generated, and can be entrained by external cues, called Zeitgebers, the primary one of which is daylight. These rhythms allow organisms to anticipate and prepare for precise and regular environmental changes.
For more information about Circadian rhythm, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
