Deep Brain Stimulation has the benefit of being more directed. An electrode is lowered into a part of the basal ganglia (http://en.wikipedia.org/wiki/Basal_gang

Deep Brain Stimulation has the benefit of being more directed. An electrode is lowered into a part of the basal ganglia (http://en.wikipedia.org/wiki/Basal_ganglia http://en.wikipedia.org/wiki/Basal_ganglia) and current pulses are used to activate neuron groups. Its not clear how it works, but it is certainly more directed than electro convulsive therapy. But, it is true, we don't really know the long term effects. However, DBS for parkinson's has been a steady success, so we can hope.