18 times - up to 4 times per week within 7 weeks. The training will be done with a trained study staff. The robot will provide help do the movements while the participant moves their fingers to control computer games. The assistance provided by the robot will be adjusted to the ability of the participant to use their hand. Each training session will last about 1 hour. This will include about 20 minutes for stretching, setup, and warm-up. Rest breaks should be requested whenever needed. The investigators will closely monitor subject while testing.