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Using electron microscopy, the authors studied neurons and their synapses in the cortical foci of the brain in patients (1) with brain tumours attended by epileptic seizures, (2) with tumours accompanied by no paroxysms, and (3) with epilepsy of unknown etiology. The material was obtained in the interparoxysmal period. Morphometric study of the(More)
The work discusses the results of a study of the overall electric activity of the cerebral cortex, its frequency analysis and integration in brain tumors attended with epileptic seizures. The changes in electric activity are correlated with the cortical ultrastructure and the oxygen balance in the brain tissue. The possible mechanisms responsible for the(More)
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