If you've been looking for a sign to work on your sleep hygiene, this is it. A new study suggests that a particular wave of ...

Brain waves can be manipulated whilst in rapid eye movement (REM) sleep, a sleep stage associated with memory and cognition, ...

Immune cells rush to the brain and promote deep sleep after a heart attack, according to a new study 1 involving both mice ...

In REM sleep, your brain waves resemble those of an awake state, which might explain why dreams during this time can feel so real. Despite this intense brain activity, your body is temporarily ...

Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is ...

A typical night's sleep consists of four to six sleep cycles, each lasting about 90 to 120 minutes and can vary on a number of factors ...

New work on sleep in a reptile reveals surprising similarities between networks that control motor rhythms and those ...

For humans this happens chiefly during deep sleep, stages 3 and 4, which differ in the percentage of brain activity that’s composed of big, rolling delta waves, as measured on an EEG.

A recent study from Mount Sinai reveals that after a heart attack, the heart signals the brain to increase sleep, helping the ...