Fig. 4From: Attenuated alpha oscillation and hyperresponsiveness reveals impaired perceptual learning in migraineursTopographies of the alpha power for pre-fixation, pre-stimulus and post-stimulus period (collapsed 3 grating conditions). The pre-stimulus alpha power for migraineurs was significantly lower than controls in the occipital-parietal region, suggesting a more excitable visual-associated cortexBack to article page