Deficient modulation of oscillatory brain activity in focal hand dystonia

Background: Control of dexterous motor function requires, depending on the context, not only retrieval but also adequate non-retrieval of acquired motor programs. There is evidence that this contextual control is associated with bidirectional modulation of oscillatory neuronal activity in the alpha band in a fronto-central network. Retrieval of learned motor programs is associated with task-related coupling and voluntary non-retrieval (suppression) with decoupling in this network. Here, we evaluate bidirectional modulation of oscillatory neuronal activity during contextual control of movements in patients with f…