Intraoperative focus localization system based on spatio-temporal ECoG analysis
Surgical therapy has been shown to provide significant relief io a number of eligible patients with othenvise intractable focal epilepsy. In the interest of these patients, the neurosurgeon may try to “tailor” the resection of cerebral cortex according to intraoperative findings regarding the location of the epileptic focus. This enhanced focus localization is achieved by reading the electrocorticogram (ECoG) obtiined from an may of electrodes (Fig. l ) , placed directly on the exposed cerebral cortex of the subject, prior to the resection. The system described here has been designed as a tool to facilitate the localization of the epiIeptic focus using the signals obtained from the ECoG array.