Background: The purpose of this review is to provide a comprehensive overview of the findings of clinical electrophysiology studies aimed to investigate changes in information processing of migraine with aura patients. Main body: Abnormalities in alpha rhythm power and symmetry, the presence of slowing, and increased information flow in a wide range of frequency bands often characterize the spontaneous EEG activity of MA.
In this chapter, we review the findings obtained by neurophysiological studies in migraine with aura (MA).
Spontaneous electroencephalography activity in MA is characterized by abnormalities in alpha rhythm power and symmetry, and the presence of slowing, and increased, information flow in a wide range of frequency bands. Evoked potential (EP) studies indicate the occurrence of increased grand-average cortical response amplitudes, interhemispheric response asymmetry, as well as deficient habituation to any kind of repetitive sensory stimulation, in MA patients.
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