title: Postoperative changes of rat EEG variance.
abstract: Concerning an EEG parameter variance, the long-term postoperative changes were observed in rats chronically implanted with bipolar depth electrodes for EEG recordings. The cortico-hippocampal EEG signals were continuously digitized and their variances were computed for each 1 min in real time. Daily mean of the EEG variance gradually increased over 2 weeks after surgery for the implantation of chronic electrodes and, then, reached a plateau. To observe the absolute quantity of the depth EEG in the rat, at least 2 weeks are required before data collections.
authors.affiliation: Department of Physiology, School of Medicine, University of Tokushima, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Sei
authors.forename: A
authors.initials: A
authors.lastname: Sano
authors.forename: H
authors.initials: H
authors.lastname: Seno
authors.forename: Y
authors.initials: Y
authors.lastname: Morita
mesh_terms: D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology; D004567:Electrodes, Implanted; D004569:Electroencephalography / Q000295:instrumentation*; D006624:Hippocampus / Q000502:physiology; D006706:Homeostasis / Q000502:physiology*; D008297:Male; D011184:Postoperative Period; D051381:Rats; D017208:Rats, Wistar; D012815:Signal Processing, Computer-Assisted; D012894:Sleep Stages / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*