STIMEP : Assessment of Subthalamic Nucleus Stimulation in Drug Resistant Epilepsy

The aim of this study is to evaluate the effectiveness and the safety of deep brain stimulation in drug resistant epilepsy. This is a double blind, controlled and randomized clinical trial with two cross-over groups and four phases. Phase 1 : base line, open phase consisting of follow-up of patients with their standard treatment. Phase 2 : Randomisation, lead implantation, followed by 3 months wash out period with the stimulator switch OFF. Phase 3 : cross-over, double blind phase : 3 months with stimulator switch ON or OFF depending on randomization allocation, followed by 3 months with the stimulator switch on the opposite position. The placebo consisting of turn OFF the stimulator. Phase 4 : open phase, one year follow-up of all patients with the stimulator switch ON.