J Korean Neurol Assoc > Volume 20(4); 2002 > Article

Journal of the Korean Neurological Association 2002;20(4): 373-378.

"발작 시작 파의 확인에 있어서 뺨전극과 나비뼈전극의 비교"

계명대학교 의과대학 신경과학교실

"Comparison of Cheek Electrode with Sphenoidal Electrodes for Identification of Ictal Onset Activity"

Yong-Won Cho

Department of Neurology, Keimyung University, School of Medicine

Abstract

"Background : The sphenoidal electrodes are used to localize epileptiform discharge in temporal lobe epilepsy. However, the insertion of the sphenoidal electrodes is a semi-invasive procedure that is painful and uncomfortable. The sensitivity of sphenoidal electrodes varies depending on the tip position of the wire electrode. We investigated the use-fulness of cheek electrodes for the identification of the ictal onset activity in temporal lobe epilepsy, and then compared it with that of sphenoidal electrodes. Methods : Both the cheek electrodes and the sphenoidal electrodes were posi-tioned and seizure monitoring was performed on 17 patients suffering from complex partial seizures. Remontaging the EEG using the sphenoidal and cheek electrodes produced EEG printouts for each seizure, alternatively. Two neurolo-gists interpreted all of the records independently. The EEGs were used to lateralize and localize the ictal onset activity and time of onset of ictal activity. Results : There were a total of 95 seizures in the 17 patients. The overall amplitude recorded by cheek electrodes was slightly lower than sphenoidal electrodes. But there were no significant differences between these two types of electrodes in detection of ictal onset. Conclusions : The cheek electrodes are comparable with the sphenoidal electrodes in its effectiveness for the localization of ictal activity in patients with complex partial seizures. It is a relatively comfortable technique. It may replace sphenoidal electrodes for the identification of ictal onset activity in complex partial seizures.Key Words : Cheek electrodes, Sphenoidal electrodes, Ictal EEG pattern"