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Title

Antiepileptic drugs modify power of high EEG frequencies and their neural generators

Authors
Brunet, D.
Kaplan, P. W.
Published in European Journal of Neurology. 2010, vol. 17, no. 10, p. 1308-1312
Abstract BACKGROUND: The clinical and molecular effects of antiepileptic drugs (AEDs) have been extensively investigated. Much less is known about their effects on human electrophysiology. METHODS: Topographic analysis in the frequency domain has been used to analyze 104 electroencephalogram (EEG) epochs of 52 patients presenting with first-ever generalized seizure, with normal MRI and EEG. Patients were treated with valproate, arbamazepine, or lamotrigine in monotherapy (each group n = 13). Thirteen patients without medication served as a control group. RESULTS: Carbamazepine and lamotrigine, both sodium-channel modulators, altered brain topography in the gamma range in the same frequency bands (50-60 Hz). Valproate, which has multiple actions on sodium and calcium channels as well as GABA turnover, modified brain topography in the low gamma range (30-40 Hz). No such changes were found in the control group. For all AEDs, the neural generators were shifted more anteriorly in medial temporal through to inferior frontal regions. CONCLUSION: Decreased gamma-power and anterior shift of neural generators after AED introduction reflect AED influence on human electrophysiology.
Keywords AdolescentAdultAnticonvulsants/*pharmacologyBrain Waves/*drug effects/physiologyCarbamazepine/pharmacologyElectroencephalography/*drug effectsEpilepsy/*drug therapy/*pathology/physiopathologyFemaleHumansIon Channels/drug effects/physiologyMaleNeurons/drug effects/*pathologyTriazines/pharmacologyValproic Acid/pharmacologyYoung Adult
Identifiers
PMID: 20402743
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Research groups Organisation et plasticité des réseaux neuronaux cérébraux (148)
Epilepsie et Chirurgie (149)
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(ISO format)
ARZY, Shahar et al. Antiepileptic drugs modify power of high EEG frequencies and their neural generators. In: European Journal of Neurology, 2010, vol. 17, n° 10, p. 1308-1312. https://archive-ouverte.unige.ch/unige:20746

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Deposited on : 2012-05-23

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