 Stroke survivors are often left with permanent physical and mental disabilities that create a major social and economic burden. Many of these patients receive different therapies in an attempt to improve their independence and quality of life. However, most of the current strategies are focused on the acute stage after stroke and are of limited influence in improving stroke outcome. One of the main problems of patients who have suffered a stroke is the difficulty in appropriately using the hand contralateral to the lesioned hemisphere; to date we have no successful means to improve the hand function in chronic stages of stroke. This protocol attempts to address this problem. 