title: [Quantitative characteristics of the electrocorticographic sleep stages in bottle-nosed dolphins].
abstract: Quantitative analysis of the ECoG stages in four bottle-nosed dolphins has demonstrated that unihemispheric slow-wave sleep is the dominant type of their natural sleep. All the variants of the bilateral and unilateral ECoG synchronization comprise 33.4% of the total recording time, with unilateral slow-wave sleep accounting for 28.8%. A single brain hemisphere is in a state of ECoG synchronization for 19% of the total recording time. The maximal amount of sleep is registered during a night and the second half of the day. Unihemispheric sleep episodes tend to appear alternatively in both hemispheres.
authors.forename: L M
authors.initials: LM
authors.lastname: Mukhametov
authors.forename: A I
authors.initials: AI
authors.lastname: Oleksenko
authors.forename: I G
authors.initials: IG
authors.lastname: Poliakova
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003344:Cortical Synchronization; D004289:Dolphins / Q000502:physiology*; D004292:Dominance, Cerebral / Q000502:physiology; D004567:Electrodes, Implanted; D004569:Electroencephalography; D005260:Female; D008297:Male; D012894:Sleep Stages / Q000502:physiology*
vernacular_title: Kolichestvennaia kharakteristika élektrokortikograficheskikh stadiĭ sna u del'finov-afalin.