Inclusion Criteria:  Clinical symptoms typical of neuropathic pain Refractory to drug therapies Lasting for at least 6 months, with a moderate to severe pain intensity (≥4/10 on Visual Analog Scale, VAS) and a stable pain treatment since 1month at least Having right to health benefits  Exclusion Criteria:  Ferromagnetic components and implanted microprocessors (i.e. cochlear implants) Drug-resistant or active epilepsy, pacemaker, pregnancy, ongoing depression or personality troubles, and ongoing opioid treatment. Any other contraindications to MRI scanner (e.g., claustrophobia, etc.).