COMPUTERIZED EEG-ANALYSIS IN MIGRAINE PATIENTS

Computerized analysis and topographical mapping were performed on the EEGs of 28 migraine patients (17 without and II with typical aura) and an age and sex-matched control group of 28 subjects. Traditional visu al EEG analysis revealed only a slight diffuse slowing of theta band i n eight patients (28.6%), and computerized analysis revealed significa nt changes in eleven (39.3%). The most frequently altered parameters w ere an increase in the relative power of the slow bands and/or a decre ase in that of alpha band, These variations appeared to be particularl y significant in the posterior regions, No significant inter-hemispher e 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.