Glioma Intraoperative MicroElectroCorticoGraphy

The PANAXIUM microelectrode ( 4x2 cm, 6 micron-thick electrode comprising 128 electrodes (28 500 µm electrodes, 96 30 µm diameter microelectrodes organized as tetrodes and 4 reference electrodes) will be placed on the cortical surface and repositioned every 90 seconds to sample the entire exposed brain surface. During the cortical electrical stimulation mapping phase, the electrode will be left at the edge of the field to detect epileptic discharges induced by stimulation. After resection, a new recording of the residual cortical surface will be made to check for persistent electrical anomalies. In the last 10 patients, the Panaxium microECoG will be compared with a macro-electrode for clinical use.