Ictal Scalp EEG Patterns of the Patients with Partial Seizure

J Korean Neurol Assoc > Volume 10(4); 1992 > Article

Journal of the Korean Neurological Association 1992;10(4): 457-464.

부분 경련 환자의 발작중 두피 뇌파 소견에 관한 연구

권오영, 차재관,장대일,김주한,김명호,이광호,송홍기,김승현,신동진,성기범

한양대학교 신경과. 순천향대학교 신경과. 한림대학교 신경과. 인천 ?중앙 길병원 신경과.

Ictal Scalp EEG Patterns of the Patients with Partial Seizure

O. Y. Kwon, M.D., J. K. Cha, M.D., D. I. Chang, M.D., J. H. Kim, M.D., M. H. Kim, M.D., K. H. Lee, M.D., H. K. Song, M.D., S. H. Kim, M.D., D. J. Shin, M.D., K. B. Sung, M.D.

Department of Neurology, College of Medicine, Hanyang University, Department of Neurology, College of Medicine, Soonchunhyang University, Department Neurology, College of Medicine, Hallym University. Department of Neurology, Chungang Gil Hospital

Abstract

Repetitive activites, dissimilar to its background rhythm, from one region are the well-known ictal EEG pattems of the partial seizure. It is, however, very difficult to obtain ictal scalp EEG of the partial seizure. So there have been only a few studies about this. Authors analyzed ictal scalp EEGs of 25 patients to get the useful diagnostic aids in localizing and confirming the foci of the partial seizure. The causes of parhal seizure were diverse. But idiopathic seizure was most common (10 patients, 40%). 19(76%) patients showed clinical seizure. But there was no clinical seizure in 6 (24%) patients. There are a lot of ictal transformations. Initiation with rhythmic theta activity was the most-common finding: initiation with rhythmic theta activity was 7(28%), alpha-activity was 4 (16%), beta activity was 1 (4%), mixed waves was 5 (20%), and repetitive epileptiforrn potentials (REPs) was 5 (20%). These ictal scalp EEG patterns of the partial seizure, even though it is not conclusive yet, can be used as a very helpful diagnostic measure in detection of the foci and diagnosis of the partial seizure.