Evaluating Modulation Effects of Burst Stimulation Patterns Using SEEG

Who May Qualify: - Drug-resistant focal epilepsy - Justified SEEG exploration in the context of presurgical assessment of epilepsy - Subjects will be a part of the epilepsy-monitoring unit for long-term SEEG recordings and analysis - Written non-opposition to study participation Who Should NOT Join This Trial: - Pregnant women (Contraindication to SEEG exploration) - Psychiatric disorders - History of psychotic disorders - History of cranial trauma serious (according to the classification), previous or evolutionary other neurological pathology - Subjects that experience surgical complications during the implant procedure will be excluded from the study Always talk to your doctor about whether this trial is right for you.