When Massimo Scanziani’s daughter was young, he’d often see her eyes twitching beneath her eyelids while she was sleeping. These rapid eye movements (or REMs) are so obvious, Scanziani told me, that ...

Share on Pinterest What explains rapid eye movements during sleep? Researchers may be getting closer to an answer. Image credit: Alexandr Ivanets/Stocksy. When animals change their head direction as ...

When our eyes move during REM sleep, we're gazing at things in the dream world our brains have created, according to a new study. The findings shed light not only into how we dream, but also into how ...

Does rapid eye movement during sleep reveal where you’re looking in the scenery of dreams, or are they simply the result of random jerks of our eye muscles? Since the discovery of REM sleep in the ...

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 ...

It can be tough to calculate exactly how long you’re in REM, but many health trackers use your heart rate, heart rate variability, and data on your movements to make solid estimations. (Just know that ...

When our eyes move during REM sleep, we’re gazing at things in the dream world our brains have created, according to a new study by researchers at UC San Francisco. The findings shed light not only ...

REM may be the most talked-about part of the sleep cycle, but getting enough of it can still be an elusive quest. You might know by now that it’s important, but maybe you don’t know exactly why or how ...

All the most commonly prescribed drugs for mental and emotional disorders affect dreams—typically via their effects on REM sleep. Under healthy conditions REM sleep ‘turns on' when activity levels of ...

Jumping spiders appear to move their eyes during sleep, similar to the way humans do during REM sleep — raising the question of whether spiders might dream as well. If you have ever seen a close-up ...