The study will first involve measuring the location and representation of the touch in the brain using multiple brain mapping tools. These tools include functional magnetic resonance imaging and magnetoencephalography; when both tools are used a very accurate picture of finger representation can be obtained, and we also know what brain areas respond to touch stimuli. Dystonia symptoms and touch perception will also be assessed. Next, patients will participate in a training intervention that involves 15 days(2.5 hr/day) of touch training applied to the fingertips of the dystonia affected hand. Patients will identify the touch targets amongst distractors and receive on-line performance feedback. The goal of the training is to provide the cortex with regular boundaries of fingers and in this way, attempt to re-shape the sensory cortex to accept these boundaries. Another group of patients will receive rTMS. The goal of the rTMS is to create an environment in sensory cortex that is open or 'ready' to accept changes induced by tactile stimulation. The rTMS will be immediately followed by the tactile training. A third group of patients will receive a placebo version of rTMS followed by tactile training. The latter group will allow us to understand if rTMS has a definite effect on the physiology of the patient. Following the 15-day training, we will assess the brains representation of fingertips, changes in dystonia symptoms and changes in the perception of touch stimuli.