Noun
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
Source: WordNetDuring a normal night of sleep, a person will alternate between periods of NREM and REM sleep. Source: Internet
If you are observing someone sleeping and you see them turn, toss, or roll over, this indicates that they are in NREM sleep. Source: Internet
It is the high spindle activity, low oscillation activity, and delta wave activity during NREM sleep that helps to contribute to declarative memory consolidation. Source: Internet
One group engaged in REM sleep, and one group did not (meaning that they engaged in NREM sleep). Source: Internet
Procedural memories are a form of nondeclarative memory, so they would most benefit from slow-wave, or NREM sleep. Source: Internet
Sleep proceeds in cycles of NREM and REM, normally in that order and usually four or five of them per night. Source: Internet