Mouse vision has a rhythm all its own
In the eyes of mammals, visual information is processed on a daily schedule set within the eyes themselves-not one dictated by the brain

Acute Sleep Deprivation Leads To Changes In Nighttime Urine
Lack of sleep causes men to produce more urine than women, making "bathroom breaks" likely

Rotating shift workers have lower levels of serotonin
People who work rotating shifts have significantly lower levels of serotonin

Cicardian system suffers and protects from prenatal cocaine exposure
The circadian factors, including the principal circadian hormone melatonin, can attenuate the prenatal effects of cocaine.

Advanced cancer patients prone to poor sleep quality, daytime sleepiness, Emory study shows
Patients with advanced-stage cancer experience very poor sleep quality and often have troubling staying awake

Late weekend sleep among teens may lead to poor academic performance
Teenagers who stay up late on school nights and make up for it by sleeping late on weekends are more likely to perform poorly in the classroom

A computational model for functional mapping of genes that regulate intra-cellular circadian rhythms
The authors present a statistical model for mapping and characterizing specific genes or quantitative trait loci (QTL) that affect variations in rhythmic responses.

The Association between Morning Hypertension and Metabolic Syndrome in Hypertensive Patients
In this study, the authors investigated the frequency of metabolic syndrome and Morning hypertension in hypertensive patients, and evaluated their association.

System-Driven and Oscillator-Dependent Circadian Transcription in Mice with a Conditionally Active Liver Clock
In this study, the authors describe their attempt to engineer a mouse strain with conditionally active hepatocyte circadian clocks.

Chronobiology: An Internal Clock for All Seasons (part 2)
Current Research on Seasonal Affective Disorder and Phototherapy

Chronobiology An Internal Clock for All Seasons (part 1)
This essay (the first of two parts) discusses chronobiology, the study of these biological clocks. Biological periodicities may range from ultradian and circadian to circahmar and circasrnualcycles

Body's biological clock found to affect cardiac rhythm patterns in healthy adults
Statistical physics approach to analysis of heartbeat pattern uncovers link to circadian cycle

The body's biological clock: alcohol may lead to physiological anarchy
Circadian rhythms refer to biological phenomena that oscillate within a 24-hour cycle, in keeping with the earth's rotation.

The science of lost sleep in teens
Studies by Brown, Lifespan scientists are at cutting edge of sleep research

Negative effects of caffeine are stronger on daytime sleep than on nocturnal sleep
A study has concluded that people drinking coffee to get through a night shift or a night of studying will strongly hurt their recovery sleep the next day.

Jefferson and Brigham and Women's researchers find blue light important for setting biological clock
Researchers have found that the body's natural biological clock is more sensitive to shorter wavelength blue light than it is to the longer wavelength green light, which is needed to see.

Health in a 24-hour society
The increasing demand of many societies for people to work outside office hours could have negative influences on health, legal, and economic outcomes

Siestas in space?
Brief naps may prevent the effects of chronic sleep loss experienced by astronauts during missions.

Night eating and obesity in the EP3R-deficient mouse
EP3R–/– mice exhibit an obese phenotype with a "night" eating component that is demonstrated by increased feeding during the light cycle of the day.

Chronopharmacology Focused on Biological Clock
The author introduce the regulatory system of biological rhythm from viewpoints of clock genes and the possibility of pharmacotherapy based on clock genes.