title: A note on the night-to-night stability of stages 3 + 4 sleep in healthy older adults: a comparison of visual and spectral evaluations of stages 3 + 4 sleep.
abstract: Night-to-night variability in the minutes of slow-wave sleep (SWS: combined minutes of stages 3 and 4 sleep) was examined for 50 healthy adults: 23 women (56-82 years old) and 27 men (54-74 years old). Visually rated SWS was more variable night to night than computer-evaluated SWS using power spectral techniques. The night-to-night correlation of the visually rated SWS was 0.61. The night-to-night correlation of the spectrally evaluated SWS was 0.91.
authors.affiliation: Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle 98195, USA.
authors.forename: L H
authors.initials: LH
authors.lastname: Larsen
authors.forename: K E
authors.initials: KE
authors.lastname: Moe
authors.forename: M V
authors.initials: MV
authors.lastname: Vitiello
authors.forename: P N
authors.initials: PN
authors.lastname: Prinz
mesh_terms: D000368:Aged; D002940:Circadian Rhythm; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012890:Sleep; D012894:Sleep Stages