A forty-six-year-old catatonic schizophrenic woman, with a thirty-year history of psychosis and a history of convulsions in childhood, was studied in preparation for lobotomy. While a recording was made from implanted depth electrodes, the patient was confronted with information (obtained from her mother) about sexual advances made to the patient by her father. Shortly after the presentation of this material an epileptic seizure occurred which the authors suggest may represent a complex psychological defense in the face of a highly traumatic revived experience.