Popis: |
Controversy has existed as to the nature of the visual evoked potential in photosensitive epilepsy. Early literature reported that the VEP in photosensitive patients was similar to that seen in other epilepsies1; that it was abnormal and of high amplitude2,3, even when patients’ EEGs were normal4. However, others noted that the presence of seizure activity altered VEP morphology5,6. Chatrianet al 7. found normal responses in 2 pattern-sensitive epileptics during the absence of spike and wave discharge. |