Deep brain stimulation is preferred over lesioning surgeries because it is reversible and adjustable, and does not permanently destroy a part of the brain. It is hence safer than lesioning. The most accepted brain target for deep brain stimulation in generalized dystonia is the globus pallidus. This is a peanut-size structure deep in the brain whose electrical activity is abnormal in dystonia. For dystonia affecting only of mainly the head and neck, the target is less clear. The subthalamic nucleus has been proposed as alternative target for those patients, and studies on that target are currently ongoing.