The best way to identify the brain regions associated with reacquisition of motor function after stroke is to test patients before, during and after reacquisition is accomplished. In this case, we propose that patients be tested before, during and after one of two specific interventions: one involving immobilization of healthy arm plus active training of affected arm (test procedure) and the other involving no immobilization, and passive manipulations of the affected arm. Results from this study will indicate which of the two therapies is better at improving recovery of motor function. Comparison of neurophysiological and imaging studies performed before, during and after the interventions will allow identification of plastic changes in brain function associated specifically with the recovery of use of the affected hand in patients with chronic ischemic subcortical stroke.