A new study finds that entering N2 sleep—a deep phase of non-rapid eye movement sleep—may help lead to more “eureka” ...

Non-rapid eye movement (NREM) sleep arousal disorders involve repeated episodes of incomplete awakening from sleep, most commonly sleepwalking or night terrors (also known as sleep terrors), but ...

The study itself focuses on NREM sleep, the lighter sleep stage often experienced during naps. Researchers examined neural activity in macaques performing visual tasks before and after a 30-minute ...

This release examines emerging trends in nighttime weight management and the growing discussion surrounding blue light ...

In this way, fluctuations in norepinephrine during non-rapid eye movement (NREM) sleep stimulate blood vessels to act like a pump for the glymphatic system, says Nedergaard.

New research provides guidance on the effects of caffeine, diet and naps on sleep. Plus there are expanded treatments for sleep apnea.

NREM 2 sleep is deeper than N1, and we spend a lot more time (up to 50% of our sleep time) in this stage. Our brain activity changes during this time and we see sleep spindles and K-complexes.

Dogs may look adorable when they snooze, but their sleeping habits actually hold fascinating clues on how living with humans ...

New research reveals how synaptic connections in the cerebral cortex can strengthen during sleep, offering insight into how ...

A study of 40 adults showed caffeine consumption shifts brain to a more ‘critical’ state during REM and NREM sleep This affected REM sleep in 20-27 year olds more than other age groups This means our ...

Every minute or so during non-rapid eye movement (NREM) sleep, the brain releases a wave of norepinephrine, a hormone that is one of the brain’s primary neurotransmitters.

And that risk is real. A 2025 study titled The Many Faces of REM Sleep Behavior Disorder [4] found that individuals with idiopathic RBD (i.e., RBD not linked to medications or other causes) have a ...