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  • Title: [Computerized analysis of EEG background activity in mono-therapeutic patients with epilepsy--relationships between antiepileptic drugs and types of seizures].
    Author: Miyauchi T, Yamaguchi T, Endo K, Hagimoto H, Tanaka K, Ishii M.
    Journal: No To Shinkei; 1990 Sep; 42(9):835-41. PubMed ID: 2245078.
    Abstract:
    EEG background activity influenced by antiepileptic drugs (AED) was studied in 109 monotherapy and drug-free epileptic patients using t-Statistical Significance Probability Mappings (t-SPMs). Patients taking phenobarbital (PB) had an increase in alpha 1 and a decrease in alpha 2 activity in comparison 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 taking VPA for GTC showed an increase in delta activity, but those with PS did not show any changes. 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 background activity and effects of AEDs was found: In PS type of seizures, the most effective CBZ exhibited striking slowing, PB was next, and VPA was last. In GTC, VPA resulted in greater slowing than PB.
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