NREM stands for non rapid eye movement... its a dreamless sleep where breathing and heart rate are regular, the blood pressure is below normal and the sleeper is still. NREM sleep is divided into 4 stages of increasing depth leading to REM sleep.
NREM and REM
You have the alternate episodes of REM and NREM types of sleep. REM sleep is characterized by rapid eye moment type of sleep. You can easily spot that the person is moving his eye ball and flickers the eye lids. The electroencephalogram of the patient is specific for REM and NREM sleep.
nrem
The most restorative stage of sleep is NREM-3.In a sleep cycle you progress through the stages:Initial sleep induction: NREM-1 -> NREM-2 -> NREM-3Full sleep cycle: NREM-3 -> NREM-2 -> NREM-1 -> REM -> NREM-1 -> NREM-2 -> NREM-3.A full sleep cycle takes approximately 90 minutes, but the time you spend in each stage changes during the night. At first you spend more time in stage 3, but as your body rests it will spend more and more time in REM.
True
Nrem (n1, n2, n3)
You do occasionally dream during NREM, but the dreams are not nearly as vivid as during REM and usually they are sparse, short and just fragments of a dream
rapid eyes movement (REM) and non rapid eyes movement (NREM)
rapid eyes movement (REM) and non rapid eyes movement (NREM)
It depends on the person, and the sleep, but the first stage averages at about 90 minutes, with stages 2-4 taking on average 100-120 minutes. The cycle generally proceeds from NREM (non-REM) stages 1-3 to REM (stage 4), back down to NREM, and back to REM, several times a night, generally ending in an REM stage before awakening.
Yes, it is possible to experience dreams during non-REM (NREM) sleep, although they are typically less vivid and less memorable than those that occur during REM sleep. NREM sleep consists of different stages, and dreaming may happen primarily during the lighter stages of sleep. However, most vivid and narrative-driven dreams are associated with REM sleep.
The dreams that people have during REM are dreams that are usually illogical and bizarre. If you are awoken during REM you are more likely to remember your dream than if you were awoken during a NREM