title: [The effect of scopolamine on the spatial organization of rat cortical potentials].
abstract: The influence of scopolamine (1 mg/kg, i.p.) on the spatial organization of the neocortical electrical activity was studied in rats. A decrease in the spectral power and coherence of brain potentials in the range of the dominant theta-rhythm peak (6.00-7.25 Hz) and their increase in the adjacent low-frequency band were observed. Both indices were decreased in the wide beta band (19.00-30.00 Hz). The described changes took place over the whole areas of the right hemisphere and parieto-temporal region of the left hemisphere. The obtained results are discussed with respect to the role of the cholinergic brain system in the higher nervous activity.
authors.affiliation: Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.
authors.forename: O Kh
authors.initials: OKh
authors.lastname: Koshtoiants
authors.forename: T A
authors.initials: TA
authors.lastname: Korol'kova
authors.forename: S N
authors.initials: SN
authors.lastname: Kozhechkin
authors.forename: R G
authors.initials: RG
authors.lastname: Kozhedub
authors.forename: N E
authors.initials: NE
authors.lastname: Sviderskaia
authors.forename: E G
authors.initials: EG
authors.lastname: Petukhova
authors.forename: A N
authors.initials: AN
authors.lastname: Balashova
mesh_terms: D000818:Animals; D001931:Brain Mapping / Q000295:instrumentation / Q000379:methods; D002540:Cerebral Cortex / Q000187:drug effects* / Q000502:physiology; D004569:Electroencephalography / Q000187:drug effects / Q000379:methods; D008297:Male; D008564:Membrane Potentials / Q000187:drug effects / Q000502:physiology; D018727:Muscarinic Antagonists / Q000494:pharmacology*; D051381:Rats; D012601:Scopolamine / Q000494:pharmacology*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D013997:Time Factors
chemical_list: D018727:Muscarinic Antagonists; D012601:Scopolamine