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Clínica de Epilepsia | Trabalhos em Congressos

Technical note

C. Forster, L. Frayman, M. Andrioli, A. Cukiert

Epilepsy Surgery Program, Hospital Brigadeiro, Sao Paulo SP, Brazil

Intraoperative electrocorticography has been widely used to help defining the epileptogenic margins and surgical resection borders. Conventional analogic EEG devices have been currently used. With the more widespread use of digital EEG recording in clinical practice, this technology has also been employed in intraoperative electrocorticography. We have recently been using intraoperative electrocorticography with digital recording (Braintech-EMSA) to define the extention of the cortical resection in temporal lobe resections. Acute depth electrodes have not been employed since the resection of the mesial structures is maximized as possible disregarding the ECoG findings. Strip and grid electrodes are used to define the neocortical epileptogenic area. Digital EEG technology offers the advantages of multiple simultaneous montage analysis and single-touch montage changes . The EEG apparatus could be reduced to the size of a laptop and its attached pre-amplifiers. There was no problem regarding artifacts and grounding in the operating room. Intraoperative digital ECoG recording is an atractive and effective alternative to analogic ECoG.