HFOs for EEG/iEEG in Epilepsy

Hi, HFO is an important biomarker in epilepsy. The high HFO rate is proved to be highly related to the

epileptogenic zones of the brain. However, I’ve read some papers about this, I didn’t find a quantified

threshold of HFO rate between epileptogenic zones and non-epileptogenic zones.

Does anyone have any idea about this?

Thank you