Intraoperative electrocorticography (iECoG) is an invasive neurophysiological monitoring technique that allows to directly record electrical cortical activity intraoperatively. Since it was first described in the 1950s, iECoG has been used in epilepsy surgery to delineate the resection area and assess the completeness of the resection of the epileptogenic zone (EZ) using interictal discharges as surrogate markers. However, conflicting reports regarding its utility, advances in noninvasive investigation techniques and the widespread adoption of stereoelectroencephalography (SEEG) have contributed to the decline of iECoG in recent years. Nonetheless, a subset of patients with focal lesional epilepsy and specific pathologies may still benefit from iECoG. This chapter will provide an overview of the utility of iECoG in epilepsy surgery, its indications, and potential alternatives.

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Intraoperative Electrocorticography

  • Farbod Niazi,
  • Alexander G. Weil,
  • Aristides Hadjinicolaou

摘要

Intraoperative electrocorticography (iECoG) is an invasive neurophysiological monitoring technique that allows to directly record electrical cortical activity intraoperatively. Since it was first described in the 1950s, iECoG has been used in epilepsy surgery to delineate the resection area and assess the completeness of the resection of the epileptogenic zone (EZ) using interictal discharges as surrogate markers. However, conflicting reports regarding its utility, advances in noninvasive investigation techniques and the widespread adoption of stereoelectroencephalography (SEEG) have contributed to the decline of iECoG in recent years. Nonetheless, a subset of patients with focal lesional epilepsy and specific pathologies may still benefit from iECoG. This chapter will provide an overview of the utility of iECoG in epilepsy surgery, its indications, and potential alternatives.