title: Analysis of the human sleep electroencephalogram by the correlation dimension.
abstract: Sleep electroencephalograms (EEG) of healthy male subjects were analyzed by the correlation dimension. The mean correlation dimensions significantly decreased from stage 'awake' to stages 1, 2 and 3 and increased during rapid eye movement sleep. The mean correlation dimensions of the sleep EEG in the second half of the night were significantly higher than those in the first half of the night. These significant changes were also seen during sleep stage 2.
authors.affiliation: Department of Neuropsychiatry, Fukui Medical University, Matsuoka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kobayashi
authors.forename: S
authors.initials: S
authors.lastname: Madokoro
authors.forename: T
authors.initials: T
authors.lastname: Ota
authors.forename: H
authors.initials: H
authors.lastname: Ihara
authors.forename: Y
authors.initials: Y
authors.lastname: Umezawa
authors.forename: J
authors.initials: J
authors.lastname: Murayama
authors.forename: H
authors.initials: H
authors.lastname: Kosaka
authors.forename: K
authors.initials: K
authors.lastname: Misaki
authors.forename: H
authors.initials: H
authors.lastname: Nakagawa
mesh_terms: D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology; D006801:Humans; D008297:Male; D017286:Polysomnography; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted; D012894:Sleep Stages / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*