title: Computerized EEG analysis in migraine patients.
abstract: Computerized analysis and topographical mapping were performed on the EEGs of 28 migraine patients (17 without and 11 with typical aura) and an age and sex-matched control group of 28 subjects. Traditional visual EEG analysis revealed only a slight diffuse slowing of theta band in eight patients (28.6%), and computerized analysis revealed significant changes in eleven (39.3%). The most frequently altered parameters were an increase in the relative power of the slow bands and/or a decrease in that of alpha band. These variations appeared to be particularly significant in the posterior regions. No significant inter-hemisphere asymmetry was revealed. Comparisons between the patient and control groups showed that the only statistically significant difference was a bilateral increase in theta power in the parieto-occipital regions of the patients. We conclude that the role of topographical EEG mapping in the clinical diagnosis of migraine is still limited.
authors.affiliation: U.O. di Neurologia e Neurofisiopatologia, Ospedale Regionale di Aosta, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Lia
authors.forename: L
authors.initials: L
authors.lastname: Carenini
authors.forename: C
authors.initials: C
authors.lastname: Degioz
authors.forename: E
authors.initials: E
authors.lastname: Bottachi
mesh_terms: D000293:Adolescent; D000328:Adult; D000513:Alpha Rhythm; D001611:Beta Rhythm; D001931:Brain Mapping; D004569:Electroencephalography / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000175:diagnosis* / Q000503:physiopathology*; D013826:Theta Rhythm