Alpha Rhythm in Classical Migraine (Migraine with Aura): Abnormalities in the Headache-Free Interval

The alpha rhythm of 18 patients with classical migraine (migraine with aura) was studied by EEG spectrum analysis for evidence of neural abnormalities during the asymptomatic period. The temporal relationship of the findings to attacks was studied by serial records in 11 cases. Increased frequency d...

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Bibliographic Details
Published in:Cephalalgia 1990-08, Vol.10 (4), p.177-181
Main Authors: Nyrke, Timo, Kangasniemi, Pentti, Lang, Heikki
Format: Article
Language:English
Subjects:
Adult
Alpha Rhythm
Analysis of Variance
EEG
Female
Humans
Male
Middle Aged
migraine
Migraine Disorders - diagnosis
Migraine Disorders - physiopathology
Time Factors
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Summary:The alpha rhythm of 18 patients with classical migraine (migraine with aura) was studied by EEG spectrum analysis for evidence of neural abnormalities during the asymptomatic period. The temporal relationship of the findings to attacks was studied by serial records in 11 cases. Increased frequency dispersion and frequency asymmetries of the alpha rhythm were found. The records were, however, mostly normal when separated from attacks by at least 10 asymptomatic days. The abnormalities increased significantly before the onset of prodromal symptoms and clearly outlasted the headache phase. The results give evidence of a fluctuating asymmetric neural disorder in classical migraine.
ISSN:0333-1024
1468-2982
DOI:10.1046/j.1468-2982.1990.1004177.x