Intracranial recordings have been obtained from patients undergoing monitoring for the treatment of drug-resistant epilepsy -- either from electrodes placed directly on the cortical surface (ECoG) or depth electrodes placed within the brain [36]. They provide a far more anatomically precise measure of neural activity at higher signal-to-noise ratios and they also enable direct recording from MTL structures. Do these recordings recapitulate findings of increased theta power from the noninvasive literature?
