Internal Clocks In 2 Neural Centers Upset By Jet Lag, Causing Disturbed Sleep

Internal Clocks In 2 Neural Centers Upset By Jet Lag, Causing Disturbed Sleep
Jet lag is the bane of many travelers, and similar fatigue can plague people who work in rotating shifts. Scientists know the problem results from disruption to the body's normal rhythms and are getting closer to a better understanding that might lead to more effective treatment.

Sleep Cycles In Early Fetus Revealed
After about seven months growing in the womb, a human fetus spends most of its time asleep. Its brain cycles back and forth between the frenzied activity of rapid eye movement (REM) sleep and the quiet resting state of non-REM sleep. But whether the brains of younger, immature fetuses cycle with sleep or are simply inactive has remained a mystery, until now.

What's in a Dream?

The (Un)Lucky Snorers Burn More Calories

Clear The Brain During Sleep For New Learning
A new theory about sleep's benefits for the brain gets a boost from fruit flies in Science. Researchers at Washington University School of Medicine in St. Louis found evidence that sleep, already recognized as a promoter of long-term memories, also helps clear room in the brain for new learning.