6 patients undergoing anterior corpus callosotomy for intractable epilepsy have been studied with depth electroencephalography (EEG). Recording before, during and after surgery has confirmed the ability of depth EEG to demonstrate and identify lateralized, focal and often multifocal disturbances. Callosal section has an immediate and lasting effect on clinical seizures and is accompanied by EEG changes with loss of generalization and synchrony following commissurotomy. Depth electrodes within the corpus callosal radiations variably reflect preoperative epileptiform activity recorded from the temporal and frontal regions and postoperatively confirm loss of a potential route of propagation through the commissure.

Keywords:
Corpus callosum, Depth electroencephalography, Epilepsy
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© 1983 S. Karger AG, Basel
1984
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