Topographic Analysis of Electroencephalographic Changes during Photic Driving Responses in Patients with Migraine.

Neuropsychobiology
Ryotaro TakashimaKoichi Hirata

Abstract

Migraineurs demonstrate abnormal information processing such as photic hypersensitivity. The photic driving response to photic stimulation (PS) is a reaction to the visual stimulation of electroencephalography (EEG). Both the photic driving response and photic hypersensitivity appear during light stimulation. We considered that evaluation of a migraineur's photic driving response may help to elucidate the mechanism of the migraineur's sensitive condition. Our study aimed to investigate EEG photic driving responses with a source-localizing method. We recorded spontaneous resting EEG with eyes closed from 20 electrodes on the scalp during the interictal phase. After recording, each PS was separately selected. We also analyzed EEG by fast Fourier transform and observed the spectrum frequency peaks and topographies in response to PS. The photic driving response could be observed at a flashing rate of >15 Hz. Patients with photic hypersensitivity tended to show more photic driving regardless of the migraine subtype. Moreover, in topographies, their activated areas were shifted anteriorly from fundamental driving to harmonic driving for each photic frequency. This anterior shift was more evident with a longer duration of illness, alt...Continue Reading

Citations

Jan 1, 2018·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Sara GaspariniEdoardo Ferlazzo
Apr 17, 2018·Acta Neurologica Scandinavica·L BernettiP Sarchielli

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