Remodeling of the bioelectric activity of the brain in the outcome of cortical resection

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Background: The total scalp electrorencephalography shows the activity of groups of cortical neurons. But each of these groups does not exist in isolation, but they are influenced by other areas, both cortical and subcortical systems of the brain. In the course of neurosurgical treatment, patients underwent resection of cortical areas in which the epileptiform focus was located. In patients with resection of the temporal lobe with structural drug-resistant epilepsy, EEG patterns of “loss of activity” are not recorded above the remote areas.

Aim: to study the mechanisms underlying the formation of electrorencephalography patterns recorded in the projection of the resected temporal lobe of the brain in patients operated on for focal drug-resistant epilepsy.

Materials and methods: There were examined 22 patients with structural pharmacoresistant epilepsy. Coherent analysis of the electrorencephalography was performed for an epoch of 30 seconds in transverse and longitudinal intrahemispheric pairs of leads.

Results: Correlation interactions between the temporal leads and their surrounding areas are enhanced after removal of the temporal lobe involved in the epileptic system.

Conclusion: The activity recorded in the postoperative period in the projection area on the scalp of the resected area is formed as a result of signal transmission from other departments.

作者简介

Ekaterina Astakhova

Almazov National Medical Research Center

编辑信件的主要联系方式.
Email: katastakhva@gmail.com

Resident of the Department of Internal Diseases

俄罗斯联邦, Saint Petersburg

Elena Marchenko

Almazov National Medical Research Center

Email: lm_sovushka@mail.ru

Functional Diagnostics Doctor, Polenov Neurosurgical Institute

俄罗斯联邦, Saint Petersburg

Alexander Chukhlovin

Almazov National Medical Research Center

Email: dr.chukhlovin@gmail.com

MD, PhD, Head of the Laboratory of Neurophysiological Monitoring, Polenov Neurosurgical Institute

俄罗斯联邦, Saint Petersburg

Mikhail Aleksandrov

Almazov National Medical Research Center; S.M. Kirov Military Medical Academy

Email: mdoktor@yandex.ru

MD, PhD, Dr. Med. Sci., Professor, Head of Clinical Neurophysiology Department, Polenov Neurosurgical Institute, Head of the Department of Normal Physiology

俄罗斯联邦, Saint Petersburg; Saint Petersburg

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版权所有 © Astakhova E., Marchenko E., Chukhlovin A., Aleksandrov M., 2022

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