Ever wake up convinced something happened that actually didn’t? That vivid memory of a conversation with your friend, a movie you’re sure you watched, or an event that feels completely real but never ...

MINNEAPOLIS — Obstructive sleep apnea, a condition that causes lower oxygen levels during sleep, is linked to degeneration of brain regions associated with memory through damage to the brain’s small ...

Have you ever wondered what actually happens in the brain during sleep? While your body appears still and at rest, your brain remains highly active, carrying out essential processes that keep you ...

Research suggests that both REM (rapid eye movement) and NREM (non-rapid eye movement) stages in the sleep cycle are ...

Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

The researchers found that measures of obstructive sleep apnea-related hypoxemia significantly predicted global white matter hyperintensity volume of the brain, which was driven by hypoxemia severity ...

RBD is marked by loss of REM sleep atonia, leading to physical dream enactment. Polysomnography is essential to confirm RBD and rule out other disorders. Idiopathic RBD is a strong predictor of ...

Rapid Eye Movement (REM) sleep, the period in which we experience vivid dreams, was discovered by scientists in the 1950s. Because REM sleep is associated with dreaming, on the one hand, and eye ...

Past age 50, men are much more likely to have REM sleep behavior disorder than women. Jose Luis Pelaez/Stone via Getty Images Every night, you go through four to five sleep cycles. Each cycle, lasting ...