Learn how scientists discovered that even in deep sleep, parts of the brain stay active, and the mind may never fully rest.

REM sleep is a stage of sleep when your heart rate increases, your blood pressure elevates, and your brain processes emotions ...

Researchers trace how different sleep stages may fine-tune what we remember, trading specifics for more general knowledge.

You did it! You finally won the lottery, and you're making plans to spend all that cash ... but then you're startled awake by your alarm clock. It was just a dream (sigh). Whether or not you remember ...

REM stands for rapid eye movement — a stage in the sleep cycle when your brain is almost as active as when you’re awake. Getting enough REM sleep is crucial, as it helps you store information and ...

When you wake up in the morning, it might feel like your brain just switched on at the ring of an alarm, although you still ...

Your nightly sleep cycle plays a key role in the quality of your sleep. Here's what happens in each stage and why it matters ...

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 ...

An international consortium of researchers has created the largest-ever database compiling records of brain activity during sleep and dream reports.

We've all experienced this: You're in the middle of a lovely dream. Perhaps you're flying. As you're soaring through the air, you meet an eagle. The eagle looks at you, opens its beak and – BEEP! BEEP ...