Bilateral pallidal stimulation is effective in the treatment of patients with generalised idiopathic dystonia. The aim of this study is to evaluate the efficacy of bilateral pallidal stimulation in patients with post-anoxic generalised dystonia or non-generalised primary dystonia.

Evaluate the effect of bilateral pallidal stimulation on the motor disability of patients with post-anoxic generalised dystonia or primary dystonia.

Inclusion Criteria:

• Post-anoxic generalised dystonia
• Idiopathic non-generalised dystonia
• Disease duration > 1 year

Exclusion Criteria:

• Contraindication to magnetic resonance imaging (MRI)
• Mini-mental status (MMS) < 24
• Severe psychiatric disorder