title: Asymmetric sleep in rats.
abstract: Five Wistar rats were surgically implanted with cortical and parietal electrodes for conventional polysomnography to test for sleep-related EEG asymmetries during 48 hours of continuous recording. When the animals were grouped not according to right-left dominance (which would represent a population bias) but instead according to preferred vs non-preferred hemisphere, significant light/dark circadian changes in side dominance were found in delta power during NREM; in theta and beta power during REM; and in alpha 1, alpha 2, and theta power during wakefulness. The changes have been interpreted as a response to temporal variations in the capability to respond to environmental challenges.
authors.affiliation: a Universitat de les Illes Balears , Palma de Mallorca , Spain.
authors.forename: Lluis
authors.initials: L
authors.lastname: Gene
authors.forename: Susana
authors.initials: S
authors.lastname: Esteban
authors.forename: Julián
authors.initials: J
authors.lastname: González
authors.forename: Mourad
authors.initials: M
authors.lastname: Akâarir
authors.forename: Antoni
authors.initials: A
authors.lastname: Gamundí
authors.forename: Rubén V
authors.initials: RV
authors.lastname: Rial
authors.forename: Maria Cristina Nicolau
authors.initials: MC
authors.lastname: Llobera
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D058256:Brain Waves / Q000502:physiology; D002940:Circadian Rhythm / Q000502:physiology; D004567:Electrodes, Implanted; D004569:Electroencephalography; D007839:Functional Laterality / Q000502:physiology*; D008297:Male; D010775:Photic Stimulation; D017286:Polysomnography; D051381:Rats; D017207:Rats, Sprague-Dawley; D017208:Rats, Wistar; D012890:Sleep / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology