Definitions for "NREM Sleep"
Keywords:  rem, sleep, rapid, dreaming, nonrapid
Non-REM (nonrapid eye movement) sleep, which is the normal period of dreamless, lighter sleep as compared to the deeper REM sleep. NREM sleep accounts for the major portion of sleep.
a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time
Non-rapid eye movement sleep. A stage of sleep in which brain activity and bodily functions slow down. NREM sleep accounts for the largest portion of the sleep cycle.