The Index Sleep Monitor is designed to strap to your upper arm so you can leave your smartwatch charging overnight.

Deep sleep is often confused with REM sleep, but the two are actually different. Deep sleep is the part of your sleep cycle in which your body recovers from the day. During deep sleep, your body ...

REM Sleep Behavior Disorder causes more than dream enactment—it’s a powerful clue to neurodegenerative disease risk.

REM sleep was found to play a restorative role ... with increased connectivity between the default mode network (DMN) and cognitive control network (CCN) and reduced DMN-thalamus connectivity ...

Study findings elucidated that the rapid eye movement (REM) sleep stage was closely associated with connections within and between the default mode network (DMN), the cingulo-opercular network ...

A good night's sleep is the best gift you can give yourself, but with the constant cycle of bad news and increased stress of daily life, it's no surprise that many of us are tossing and turning at ...

Not spending enough time in the two deep stages of sleep — slow-wave and rapid eye movement, or REM, sleep — may hasten the deterioration of parts of the brain associated with Alzheimer’s ...