PSEUDOEPILEPTIFORM EEG PATTERNS DURING PSEUDOSEIZURES

Seven seizures, recorded from three patients, showed electrographic fi ndings suggestive of epileptic seizures. However, careful analysis of the EEGs revealed multiple phase reversals and electrical field incons istencies. Time-synchronized video recording confirmed that the patter ns represented movement artifacts due to the patients shaking their he ads, upper extremities, or bodies with secondary movement of electrode s, electrode wires, or electrode boxes. This series of patients highli ghts the importance of careful analysis of the data in the differentia tion of psychogenic from epileptic seizures.