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Biology Articles » Chronobiology

Chronobiology

Chronobiology is a science that studies time-related phenomena in living organisms. Articles include topics on circadian rhythms, ultradian rhythms, infradian rhythms, tidal rhythms, etc.


Chronobiology Articles

Food-Related Clock In The Brain Identified
In investigating the intricacies of the body's biological rhythms, scientists have discovered the existence of a "food-related clock" which can supersede the "light-based" master clock that serves as the body's primary timekeeper.

Date: 28 Mar 2010, Rating: 4.50

After A Time-Shift, Mixed Signals From The Circadian Clock
Circadian rhythms in mammalian behavior, physiology, and biochemistry are controlled by the central clock within a brain structure known as the suprachiasmatic nucleus

Date: 28 Mar 2010, Rating: not rated

Pony Express Protein: Protein Found That Rallies Biological Clock
A biologist and his collaborators have identified the factor in mammalian brain cells that keeps cells in synchrony so that functions like the wake-sleep cycle, hormone secretion and loco motor behaviors are coordinated daily.

Date: 28 Mar 2010, Rating: 4.00

Jet Lag, Circadian Clocks Explained
Circadian clocks regulate the timing of biological functions in almost all higher organisms.

Date: 28 Mar 2010, Rating: 1.00

Changing Our Clocks: New Research Explores How Our Bodies Keep Time
Our alarm clocks may spring forward on March 9, but our biological clocks may take longer to adjust.

Date: 28 Mar 2010, Rating: not rated

Researchers Find Biological Clock For Smell In Mice
Biologists have discovered a large biological clock in the smelling center of mice brains and have revealed that the sense of smell for mice is stronger at night, peaking in evening hours and waning during day light hours.

Date: 28 Mar 2010, Rating: not rated

Discovery Clarifies Role Of Peptide In Biological Clock
A biologist at Washington University in St. Louis is giving the VIP treatment to laboratory mice in hopes of unraveling more clues about our biological clock.

Date: 28 Mar 2010, Rating: not rated

'Pony Express' Protein Shown To Rally Biological Clock
A biologist and his collaborators have identified the factor in mammalian brain cells that keeps cells in synchrony so that functions like the wake-sleep cycle, hormone secretion and loco motor behaviors are coordinated daily over a 24-hour period.

Date: 28 Mar 2010, Rating: not rated

Unprecedented Data On Circadian Rhythms Revealed
Fluctuations in light intensity allow restoring the regularity of circadian rhythms.

Date: 28 Mar 2010, Rating: 2.00

From biological clock to biological rhythms
The genetic and molecular analysis of circadian timekeeping mechanisms has accelerated as a result of the increasing volume of genomic markers and nucleotide sequence information.

Date: 11 Feb 2009, Rating: 4.50, 7 pages

A proposal for robust temperature compensation of circadian rhythms
The internal circadian rhythms of cells and organisms coordinate their physiological properties to the prevailing 24-h cycle of light and dark on earth.

Date: 11 Feb 2009, Rating: not rated, 6 pages

When It Comes To Sleep Research, Fruit Flies And People Make Unlikely Bedfellows
You may never hear fruit flies snore, but rest assured that when you're asleep they are too.

Date: 11 Feb 2009, Rating: not rated

Keeping The Body In Sync: The Stability Of Cellular Clocks
A study in Switzerland uses the tools of physics to show how our circadian clocks manage to keep accurate time in the noisy cellular environment.

Date: 11 Feb 2009, Rating: not rated

How Your Body Clock Avoids Hitting The Snooze Button
Scientists from Queen Mary, University of London have discovered a new part of the mechanism which allows our bodyclocks to reset themselves on a molecular level.

Date: 11 Feb 2009, Rating: 5.00

Mood Lighting: Penn Researchers Determine Role Of Serotonin In Modulating Circadian Rhythm
Researchers have determined how serotonin decreases the body's sensitivity to light and that exposure to constant darkness leads to a decrease in serotonin levels in the brain of fruit flies.

Date: 11 Feb 2009, Rating: 5.00

New Fruit Fly Protein Illuminates Circadian Response To Light
Researchers at the University of Pennsylvania School of Medicine have identified a new protein required for the circadian response to light in fruit flies.

Date: 11 Feb 2009, Rating: not rated

New Way Found To See Light Through Novel Protein Identified By Dartmouth Geneticists
Geneticists have discovered a new class of proteins that see light, revealing a previously unknown system for how light works.

Date: 11 Feb 2009, Rating: not rated

Novel Connection Found Between Biological Clock And Cancer
Dartmouth Medical School geneticists have discovered that DNA damage resets the cellular circadian clock

Date: 11 Feb 2009, Rating: 4.00

The mouse Clock mutation reduces circadian pacemaker amplitude and enhances efficacy of resetting stimuli and phase–response curve amplitude
The increased efficacy of resetting stimuli and decreased PER expression amplitude can be explained in a unified manner by a model in which the Clock mutation reduces circadian pacemaker amplitude in the suprachiasmatic nuclei.

Date: 9 Jan 2008, Rating: not rated

The circadian basis of winter depression
The findings support the phase-shift hypothesis for SAD, as well as suggest a way to assess the circadian component of other psychiatric, sleep, and chronobiologic disorders

Date: 9 Jan 2008, Rating: 4.00, 8 pages