Brain mapping with electrodes placed directly on the brain! This is an intracranial electrode recording procedure for epilepsy, in which electrical activity is measured from the exposed surface of the brain, which is helpful for more precisely localizing seizure activity that has been identified with scalp EEG recordings. Electrocorticography (ECoG) is performed by using electrodes placed directly on exposed cortical surface to record brain electrical activity. This is considered an invasive procedure, simply due to the fact that craniotomy is needed in order to expose the brain and directly place the electrodes, done either intraoperatively or extraoperatively. ECoG has been used to localize epileptogenic zones during presurgical planning, map out cortical functions, and to predict the success of epileptic surgical resectioning. An ECoG recording done in a neurosurgical patient who suffers from epilepsy raises the exact problematic area that contain abnormal neuronal pattern that is responsible for the seizures. This active seizure focus can then be surgically resected without further complications.
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