However, it’s a little more complex. “There are two types of sleep: Non-rapid eye-movement (NREM) sleep and rapid ...

A new study suggests that insufficient slow-wave and REM sleep may accelerate brain deterioration associated with Alzheimer's ...

It’s typically classified as its own category compared to NREM sleep (aka non-REM sleep), the latter of which has three stages that include light sleep and deep sleep. During REM sleep ...

A new study reveals how the brain reprocesses and refines memories during sleep, particularly those related to spatial ...

Not getting enough of deeper stages of sleep raises the risk of brain deterioration associated with Alzheimer’s disease, a ...

A wrist-worn activity tracker recorded both movement and heart rate. From those signals, periods of deep (NREM) sleep and REM ...

Persistent sleep difficulties―trouble falling asleep, waking up frequently and unable to go back to sleep again, feeling ...

Yet stages 1 through 4 have been labeled as non-REM sleep, or NREM—80 percent of sleep is defined by what it’s not. Sleep scientists speculate that specific sequences of NREM and REM sleep ...

Sleep disturbances may accelerate neurodegeneration, but whether they cause or result from disease remains unclear. Improving ...

The transition of the brain from NREM into REM sleep is pivotal, not just a time for vivid dreaming but for processing and storing memories. REM sleep is one of the phases needed for emotional ...

Your brain prevents reflexes in NREM sleep and muscle movements in REM sleep, so you can't sneeze. Checking for mold, using an air purifier, and keeping pets off your bed may improve night sneezing.