Known as the Hat Man, this tall, dark, featureless entity has been seen in people's bedrooms across the globe, watching over them from a doorway, cupboard or corner as they drift between sleep and ...

We ask an expert why REM sleep is so important, what happens if we don't get enough of it and how to get more REM sleep.

Prolonged rapid eye movement sleep latency may be an early indicator of Alzheimer’s disease and related dementias, according ...

There are tell-tale signs when you don’t get enough REM sleep. It’s the fourth stage of sleep and it’s crucial for processing your daily experiences and banking shorter and longer-term memories.

A new study showed that people who took longer to enter this dream phase of sleep had higher levels of amyloid beta and tau, ...

Researchers have discovered that positive emotions enhance perceptual memories during sleep, particularly in the non-REM stage.

However, some research suggests that poor sleep could raise your risk of Alzheimer’s. A study published in November found ...

One study suggests that taking longer to reach the rapid eye movement (REM) stage of sleep is associated with biomarkers of Alzheimer’s disease. The delay in getting to REM might be useful in ...

Taking longer to enter the dream phase can disrupt the ability to consolidate memories and interfere with emotion regulation.

In the late 1800s scientists began to interrogate the neurological basis of dreams. That changed in Sigmund Freud’s time but ...