We report on the case of a 20-year-old man with bilateral parasagittal pari
eto-occipital polymicrogyria and epilepsy. Functional magnetic resonance im
aging responses to reversing checkerboard and interhemispheric electroencep
halogram coherence changes to moving gratings were investigated. Results of
both studies indicate that the polymicrogyric cortex was activated by visu
al stimuli, suggesting preserved function in the dysplastic area.