Evidence for increased background neural noise in migraine with aura: Hyperactive but not hyperresponsive

The increased EEG responses in MA show evidence that in migraine the brain is "noisier" compared to controls. As the contrast response was similar in both MA and control groups, this suggests typical contrast gain control, as distinct from the abnormality seen previously in photosensitive epilepsy. The chosen color of POTs can reduce discomfort judgments under some circumstances, although this does not appear to be specific to MA.