During mammalian gestation, fetal circadian rhythms are thought to be mainly controlled by maternal signals. In humans, the initiation and activity of central and peripheral circadian clocks is ...

The mammalian circadian system is composed of multiple cellular biological clocks synchronized among each other, maintaining thus robust rhythms of behavior. The hypothalamic suprachiasmatic nucleus, ...

The molecular pathway that carries time-of-day signals from the body's internal clock to ultimately guide daily behavior is like a black box, says a researcher. Now, new research is taking a peek ...

In addition to the sleep–wake cycle and cognitive functions such as learning and memory, intrinsic clocks determine nearly all circadian cycles in physiology, such as daily variation in blood pressure ...

Humans and most other organisms have internal biological clocks that track the daily cycle of sunrise and sunset. These clocks help time our sleep, metabolism and other essential body functions over ...

Researchers led by Gen Kurosawa at the RIKEN Center for Interdisciplinary Theoretical and Mathematical Sciences (iTHEMS) in Japan have used theoretical physics to discover how our biological clock ...