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.
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.
Larsen
L H
LH
Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle 98195, USA.
Moe
K E
KE
Vitiello
M V
MV
Prinz
P N
PN
D000368:Aged; D002940:Circadian Rhythm; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012890:Sleep; D012894:Sleep Stages