On the origin of epileptic High Frequency Oscillations observed on clinical electrodes

In drug-resistant partial epilepsies, resective surgery is the treatment of choice to suppress seizures, provided that the epileptogenic zone (EZ) is clearly identified and that it can be safely removed. In this context, the capacity to rely on objective biomarkers of the EZ is fundamental to define the optimal surgical approach in the specific context of each patient. Prior to surgery, patients may benefit from pre-surgical investigations, among which depth-EEG recordings which play a key role as the use of intracranial electrodes offer the unique opportunity to directly and locally record field potentials from brain areas with an excellent temporal resolution (sub-millisecond).

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