Stroke is the leading cause of activity limitation among older adults in the United States. NeuroMuscular Electrical Stimulation (NMES) can be used by stroke survivors who do not have enough residual movement to take part in volitional active repetitive movement therapy and does not require expensive equipment or skilled personnel. Two types of NMES are available. The first is cyclic NMES, which electrically activates paretic muscles at a set duty cycle for a preset time period. (This study will employ both "traditional" cyclic stimulation and "sensory-only" stimulation, in which intensity is set at a level to be felt by the patient but insufficient to cause muscle contraction.)In cyclic NMES, the patient is a passive participant and does not assist the NMES by volitionally contracting the muscle during stimulation. The second type encompasses various forms of NMES in combination with biofeedback. For example, in "EMG-triggered" NMES, subjects are "rewarded" with stimulation in response to successful attempts to reach a pre-set level of EMG activity in the affected muscle. There is increased cognitive input and involvement on the part of the patient. The purpose of this study is to first demonstrate the effectiveness of these two types of surface stimulation on decreasing motor impairment and activity limitation; the study also seeks to assess the effect of adding cognitive input to NMES to reduce motor impairment and activity limitation.