Methods. We compared the effects of two different therapeutic protocols. The experimental protocol was based on action observation plus sonification; patients of the experimental group re-learned 8 motor gestures watching video-clips showing an actor performing the same gestures, and then tried to repeat the gesture. Each video-clip was composed by images and sounds of the gestures. The sounds of gestures were obtained with the sonification technique, by transforming kinematic data (velocity) recorded during the execution of gesture, into pitch variations (for an example see: bit.ly/sonif_example). The same 8 motor gestures were re-learned in the standard protocol, with a common sensory stimulation method (active comparator group). We evaluated all patients of the two groups with functional and clinical scales before, immediately after, at 1 month, and 3 months after each treatment.The duration of each protocol will be about 2 months, 15 sessions, 2 times a week.