This research is being done to find out if brain stimulation combined with a rehabilitation therapy improves arm weakness as a result of having a stroke. The stimulation technique is called transcranial direct current stimulation (tDCS). The treatment uses direct electrical currents to stimulate specific parts of the brain. The rehabilitation therapy is called "modified Constraint Induced Movement Therapy" (mCIMT). During this rehabilitation therapy study participants will wear a mitt on the hand of the arm that was not affected by their stroke. It is designed to restrain the use of the unaffected arm, while performing therapy with impaired one.
It is not known if brain stimulation combined with rehabilitation therapy will improve arm weakness. Study participants will receive rehabilitation therapy while on this study. Study participants may or may not receive the brain stimulation therapy.

Depression contributes directly to disability following a stroke and is the single strongest predictor of quality of life. Treatment of depressive symptoms is associated with better functional recovery and return to activities of daily living. Resistance training can effectively improve post-stroke mobility and has the potential to serve as an alternative (non-drug) anti-depressant treatment option. The purpose of this study is to assess the effects of resistance training on post-stroke depressive symptoms.