A new study reveals that not getting enough of specific stages in the sleep cycle may be linked to cognitive decline and ...

As part of a full night’s rest, we cycle through four stages of sleep several times. This includes three stages of non-REM ...

Spending lower proportions of time in two deep sleep stages — including REM sleep — may be linked to volume changes in critical brain regions that can be vulnerable to Alzheimer’s disease, a new study ...

A new study suggests that insufficient slow-wave and REM sleep may accelerate brain deterioration associated with Alzheimer's ...

The key to getting good sleep is understanding how it works. But it's a complicated thing. And, while we usually hyperfocus on sleep duration, counting the hours of rest we get and assuming the ...

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 ...

Instead of entering deep sleep phases, the brain continues to scan its surroundings for potential threats that do not actually exist. The REM sleep cycle, which plays a crucial role in emotion ...

or REM, sleep, a critical phase of the sleep cycle responsible for cognitive functions such as memory, concentration and mood regulation. During the first three to four hours of sleep, alcohol is ...