We investigate phase synchronisation in EEG recordings from migraine patients. We use the analytic signal technique, based on the Hubert transform, and find that migraine brains are characterised by enhanced alpha band phase synchronisation in the presence of visual stimuli. In migraine, the brain synchronises to the idling rhythm of the visual areas under certain photic stimulations; hypersynchronisation of the alpha rhythm may suggest a state of cortical hypoexcitability during the interictal phase of migraine.
Visually evoked phase synchronisation changes of alpha rhythm in migraine. Correlations with clinical features
DE TOMMASO, Marina;STRAMAGLIA, Sebastiano;MARINAZZO, DANIELE;GUIDO, MARCO;LAMBERTI, Paolo;LIVREA, Paolo
2004-01-01
Abstract
We investigate phase synchronisation in EEG recordings from migraine patients. We use the analytic signal technique, based on the Hubert transform, and find that migraine brains are characterised by enhanced alpha band phase synchronisation in the presence of visual stimuli. In migraine, the brain synchronises to the idling rhythm of the visual areas under certain photic stimulations; hypersynchronisation of the alpha rhythm may suggest a state of cortical hypoexcitability during the interictal phase of migraine.File in questo prodotto:
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