Technique and technical problems.
D000698:Analgesia; D004558:Electric Stimulation; D004599:Electric Stimulation Therapy / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D004567:Electrodes, Implanted; D005069:Evaluation Studies as Topic; D006801:Humans; D010148:Intractable Pain / Q000628:therapy*; D010286:Paraventricular Hypothalamic Nucleus; D013238:Stereotaxic Techniques