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COMPUTERIZED ANALYSIS OF EEG BACKGROUND ACTIVITY IN MONOTHERAPIC PATIENTS WITH EPILEPSY : RELATIONSHIPS BETWEEN ANTIEPILEPTIC DRUGS AND TYPES OF SEIZURES Toshiro Miyauchi 1 , Tetsuaki Yamaguchi 1 , Keiko Endo 1 , Hiroshi Hagimoto 1 , Kenkichi Tanaka 1 , Miyuki Ishii 1 1Department of Psychiatry, Yokohama City University School of Medicine Keyword: epilepsy , antiepileptic drug , seizure type , monotherapy , t-SPM(t-statistic significance probability mapping) pp.835-841
Published Date 1990/9/1
DOI https://doi.org/10.11477/mf.1406900094
  • Abstract
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EEG background activity influenced by antiepi-leptic drugs (AED) was studied in 109 monotherapy and drug-free epileptic patients using t-StatisticalSignificance Probability Mappings (t-SPMs).

Patients taking phenobarbital (PB) had an incre-ase in alpha 1 and a decrease in alpha 2 activity incomparison with drug-free epileptics. Patients taking PB for generalized seizures with tonic-clonic convulsion only (GTC) also had a significant increase in alpha 1 and a decrease in alpha 2, whereas those with partial seizures (PS) had an increase in theta and beta 1 and a decrease in alpha 2 activity. Patients taking valproic acid (VPA) had a decrease in only beta 1 activity. Patients tak-ing VPA for GTC showed an increase in delta ac-tivity, but those with PS did not show any chan-ges. Patients taking carbamazepine (CBZ) for PS exhibited marked slowing with an increase in theta and alpha 1 and a decrease in alpha 2 activity.

These results mean that changes in EEG due to AEDs differ depending on the type of seizures. More interestingly, discrepancy between EEG ba-ckground activity and effects of AEDs was found : In PS type of seizures, the most effective CBZ ex-hibited striking slowing, PB was next, and VPA was last. In GTC, VPA resulted in greater slow-ing than PB.


Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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