But how do sleep cycles work? To find out, I took part in a polysomnography. This is a gold standard sleep study that helps ...

However, some research shows that major stressors may increase REM sleep but reduce deep sleep. REM rebound, which is when we ...

we’re also regulating our mood and consolidating our memories. Rapid eye movement, or REM, sleep was discovered in 1953—more than 15 years after stages 1 through 4 had been mapped—by Eugene ...

Our brain uses light sleep to transition between slow-wave sleep, or deep sleep, and rapid eye movement, or REM, sleep, which is the stage in which we dream. Experts say about 50% of your night ...

REM sleep behavior disorder is characterized by acting out dreams, which may include shouting, kicking and punching during ...

Hypocretin, also called orexin, is a brain chemical that controls when you’re awake and when you’re in rapid eye movement (REM) sleep. People with narcolepsy often don’t have as many brain ...

For the past century, the University of Chicago has been a pioneer in sleep research—from opening the world’s first laboratory devoted to sleep research to discovering REM sleep. Today, UChicago ...