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Low Interhemispheric and High Intrahemispheric EEG Coherence in Migraine
Author(s) -
Koeda T.,
Takeshima T.,
Matsumoto M.,
Nakashima K.,
Takeshita K.
Publication year - 1999
Publication title -
headache: the journal of head and face pain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.14
H-Index - 119
eISSN - 1526-4610
pISSN - 0017-8748
DOI - 10.1046/j.1526-4610.1999.3904280.x
Subject(s) - electroencephalography , coherence (philosophical gambling strategy) , psychology , migraine , audiology , cognitive psychology , neuroscience , medicine , mathematics , psychiatry , statistics
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.