title: Low interhemispheric and high intrahemispheric EEG coherence in migraine.
abstract: Twenty women with migraine were evaluated by EEG coherence analysis. In comparison with controls, the migrainous subjects showed lower interhemispheric coherence values at C3-C4 for the delta band (P=0.0030) and at F3-F4 (P=0.0055) and C3-C4 (P=0.0018) for the beta band frequency (Wilcoxon criterion). In contrast, 22 intrahemispheric coherence pairs were significantly higher in the migraine group than in the control group (P<0.01). The subjects with visual aura showed lower interhemispheric coherence at O1-O2 and T5-T6 for the alpha band than the subjects without the aura. Discriminant analysis revealed that 95% of the subjects with migraine and 85% of the controls were correctly classified into their proper groups. We suggest that EEG coherence analysis is a sensitive parameter in the detection of electrophysiological abnormalities in patients with migraine.
authors.affiliation: Division of Child Neurology, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, Yonago, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Koeda
authors.forename: T
authors.initials: T
authors.lastname: Takeshima
authors.forename: M
authors.initials: M
authors.lastname: Matsumoto
authors.forename: K
authors.initials: K
authors.lastname: Nakashima
authors.forename: K
authors.initials: K
authors.lastname: Takeshita
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D054022:Cerebrum / Q000503:physiopathology*; D002648:Child; D004569:Electroencephalography; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D008881:Migraine Disorders / Q000503:physiopathology*; D020325:Migraine with Aura / Q000503:physiopathology