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non rapid eye movement sleep

(neosleep, neo-sleep, non-rapid eye movement sleep, non-REM sleep)

The other major sleep state apart from REM sleep; comprises sleep stages one, two, three, four, which constitute levels in the spectrum of non-REM sleep "depth" or physiologic intensity.


Definition reprinted with permission from Culebras, Antonio, Clinical Handbook of Sleep Disorders, Butterworth-Heinemann