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.

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

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.

Jet Lag, Circadian Clocks Explained

Circadian clocks regulate the timing of biological functions in almost all higher organisms.

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.

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.

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.

'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.

Unprecedented Data On Circadian Rhythms Revealed

Fluctuations in light intensity allow restoring the regularity of circadian rhythms.

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.

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.

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.

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.

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.

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.

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.

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.

Novel Connection Found Between Biological Clock And Cancer

Dartmouth Medical School geneticists have discovered that DNA damage resets the cellular circadian clock

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.

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