 After unilateral stroke, incomplete recovery of arm and hand movement is common and its long-lasting negative effects include increased care giving costs and overall reduced quality of life. Recent evidence suggests that a novel behavioral intervention could improve motor functions in sub-acute patients with added benefits in cognitive and brain functions. However few studies have addressed whether chronic stage patients can also benefit from the intervention and how brain plasticity works over the course of rehabilitation. This study will investigate the benefits of two types of intervention methods that are extendable for community-based intervention services in the future. It also will examine changes in integrity of motions before and after the intervention. Further comparisons between brain functions and structure will be made using magnetoencephalography MEG and magnetic resonance imaging MRI, non-invasively. These behavioural and physiological measures will inform the mechanisms of stroke recovery and training. 