Epileptogenic zone | Region of cortex that can generate epileptic seizures and removal or disconnection of which should lead to seizure freedom |
Epileptogenic lesion | Distinct brain lesion, capable of generating and sustaining epileptic seizures |
Excitable zone | Region susceptible to excitation spreading from a primary focus |
Irritative zone | Region of cortex that generates interictal epileptiform discharges on EEG |
Seizure/ictal onset zone | Region where a clinical seizure originates |
Symptomatogenic zone | Region of cortex that generates the initial seizure presentation (signs) |
Functional deficit zone | Region of cortex that in the interictal period is clinically and/or electrophysiologically abnormal |
Ictal/postictal changes | Nonspecific tissue changes due to local excitotoxicity |