Computer measures of sleep EEG reliably sort visual stage 2 epochs by NREM period of origin.
D000293:Adolescent; D000328:Adult; D001921:Brain / Q000502:physiology; D003201:Computers; D004569:Electroencephalography; D005163:Factor Analysis, Statistical; D006801:Humans; D008297:Male; D012894:Sleep Stages / Q000502:physiology*