Rapid eye movement (REM) sleep is one of four stages the brain moves through while sleeping. In REM sleep, the eyes move rapidly in various directions and dreams can occur. REM sleep typically ...

Usually REM sleep is fairly short during the beginning of the night, and gets longer with each cycle. Using Apple's definition, in which core sleep is the same as light sleep, it's normal for ...

Maybe your mind was racing all night, or you were suffering from night sweats, or maybe you just didn’t get enough rapid eye movement (REM) sleep. “REM sleep helps lock in newly learned ...

A punch biopsy reliably detected a biomarker of neurodegenerative disease in a small cohort of older adults diagnosed with ...

Night terrors are episodes of intense screaming, crying, thrashing, or fear during sleep that happen again and again, usually in children ages 3 to 10, but most often in the 3-7 age group.

Patients with Alzheimer disease and cognitive impairment with delayed REM sleep patterns have increased levels of brain amyloid and tau.

Reduced oxygen during REM sleep may lead to white matter damage in the brain. The researchers said the results call for a renewed discussion about sleep apnea screening and treatment in older adults.

Rapid eye movement (REM) sleep has been considered important for consolidation of memories, particularly of skills. Contrary to expectations, we found that REM sleep suppression by administration ...

A lot happens in your body while you sleep. When you get your ZZZs, you go back and forth between REM and non-REM sleep. During non-REM sleep, your brain is not as active. And in the deeper stages ...