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

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

Brain waves and eye movements tell doctors about the timing of the different phases of sleep. The two broad phases of sleep are non-REM (non-rapid eye movement) and REM (rapid eye movement).

The frequency and duration of large muscle group leg movements during sleep change over time, and show distinct sleep stage differences.

Scientists have discovered that rhythmic oscillations of a specific neurotransmitter play a vital role in clearing toxic ...

Scientists have uncovered a potential link between delayed REM sleep and Alzheimer's disease. A new study shows that ...

What has puzzled researchers and philosophers for many centuries is the ‘why’ of sleep, along with the ‘how’. We human animals know from experience that we need to sleep, ...

With ‘always connected’ being the buzzword of the times, sleep has become a compromise or elusive factor for many. To add to ...

People who take longer to enter the dream stage of the sleep cycle are more likely to develop dementia, suggests a new study.

Research indicates longer REM latency is associated with higher Alzheimer's biomarkers, pointing to its potential as an early ...

People who take significantly longer to enter the rapid eye movement (REM) phase of sleep could be experiencing ... While ...