International team analyzed frequencies of the biosignals recorded from stereo-EEG in-between epileptic seizures. Using more sensitive recordings and a novel analysis, they identified very high-frequency oscillations (frequencies higher than 1kH), which are more specific to the epileptogenic zone than relativem widely-used high frequency oscillations. This finding may lead to better identification of the origin of epileptic discharges and in turn to better surgery outcomes in patients with drug-resistant epilepsy. Team of Milan Brazdil published this results in prestigious journal Annals of Neurology 2017.