title: Beta EEG activity and insomnia.
abstract: To date there have been seven studies which find that beta EEG is elevated at around sleep onset and during polysomnographic sleep in patients with insomnia. These findings suggest that insomnia may be characterized by central nervous system (CNS) hyperarousal. In this article, the seven studies are critically reviewed, two theoretical perspectives on beta EEG are presented, and the concept of hyperarousal as a three component process is discussed.
authors.affiliation: Neurophysiology Unit, Department of Psychiatry, Geneva University Hospital, Switzerland
authors.forename: Michael L.
authors.initials: ML
authors.lastname: Perlis
authors.forename: Helli
authors.initials: H
authors.lastname: Merica
authors.forename: Michael T.
authors.initials: MT
authors.lastname: Smith
authors.forename: Donna E.
authors.initials: DE
authors.lastname: Giles