Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

People on TikTok and other social media say they feel more alert when they have had fewer hours of sleep—but sleep scientists ...

New research suggests that people who take significantly longer to start the dream phase of sleep may be showing an early ...

Not spending enough time in the two deep stages of sleep — slow-wave and rapid eye movement, or REM, sleep — may hasten the ...

Research reveals how specific sleep stages protect brain vulnerable to Alzheimer's, offering hope through simple lifestyle ...

New research shows that reduced time in slow wave and REM sleep is associated with smaller brain volumes in regions ...

Oxygen re-saturation during sleep is significantly affected by sleep stage and by cardiovascular and pulmonary comorbidities.

A study published in the Journal of Clinical Sleep Medicine explores the association between sleep architecture and brain atrophy in regions vulnerable to | Neuroscience ...

Sleep deficiency is associated with atrophy of the inferior parietal region of the brain, according to a study published online.

As most people who have pulled an all-nighter will agree, lost sleep can leave us feeling foggy and far from our best. In ...

Two new studies are making waves in the health world. One suggests not getting enough of the "right kind" of sleep may ...