Subdural grid electrode

Subdural grid electrodes are used for monitoring or mapping the cortical surface for the surgical treatment of epilepsy. They can be placed with low morbidity and can precisely identify seizure zone and eloquent areas of the brain. The major complications of subdural grid electrode implantations are delayed subdural hematoma at the site of the subdural grid -that requires emergency operation- infection, epidural hematoma, brain swelling. The primary indications for subdural grid electrodes implantation are:
 * to localize the epileptogenic zone;
 * to localize the eloquent functional areas.