I use intracranial EEG (iEEG) with stereotactic depth probes (sEEG) in presurgical epilepsy patients to measures local brain activity in high-frequency broadband activity in 80-180 Hz. I use this technique to study the temporal dynamics of the mesial, lateral prefrontal, and cingulate cortices in attention shifts. For behavioral analysis, the proportion of correct and incorrect trials relative to the number of all trials is computed for each subject. The correct trials are calculated as the total number of hits (HIT, responding to the relevant target) and Correct Rejection (CR, not responding to the irrelevant target). The incorrect trials consist of false alarms (FA, responding to the irrelevant target), misses (MISS, not responding to the relevant target), and random responses.