Intraoperative electrocorticography-guided glioma surgery: impact on extent of resection and functional preservation.

Direct cortical stimulation (direct cortical stimulation) remains the gold standard for functional mapping in glioma surgery; however, its reliability may be limited by glioma-induced neural remodeling, incomplete motor mapping, and intraoperative constraints.

We investigated whether supplementing direct cortical stimulation with electrocorticography (electrocorticography) for intraoperative functional mapping and tumor boundary delineation improves extent of resection (EOR) and neurological outcomes in glioma surgeries.