Definitions for "Non-rapid eye movement sleep"
Keywords:  nrem, rem, sleep, stage, categorized
(NREMS, also written as non-REMS) See Sleep stages.
Stages 1-4 of sleep are often categorized into NREM sleep.  In this stage the body is in a higher state of wakefulness than that of REM sleep.  Observations show that NREM sleep is characterized by an idle brain and relaxed body.  It is in this stage which sleep walking and sleep talking both occur.
The early stages of sleep.