The application of prolonged electroencephalographic monitoring and video recording to the diagnosis of epilepsy.

This study reports the results of the application of intensive monitoring by electroencephalogram (EEG) combined with video recording as an aid to the diagnosis of epilepsy. A group of 622 patients was investigated; useful information was obtained in approximately 50% of these patients. Ten per cent of the patients with suspected epilepsy had a seizure during the period of recording. The combined analysis of the video recording and the EEG provided valuable evidence in the analysis of complex partial seizures and highlights the high prevalence of pseudoseizures in patients who are suspected of having epilepsy.