The purpose of this study is to develop and test if upper limb task practice and muscle activity training improve upper limb function in stroke survivors. Participants will be asked to come to the laboratory 3 times a week for 6 weeks to receive upper limb task practice and/or muscle activity training. Participants will also come to the laboratory for additional 3 visits for assessments of upper extremity function. The total duration of the study will be 2.5 months.

Sensory stimulation has been shown to enhance rehabilitation outcomes. However, most sensory stimulation devices interfere with natural hand tasks. Thus, a new wearable stimulation device has been developed to deliver imperceptible vibration to wrist skin. This study is to evaluate the community use of the device for patients with neurologic movement disorders. Participation will include wearing the provided device and charging the device every night. The knowledge regarding community use of the device may contribute to improving the device functionality and usability for future users of the device.

Approximately 80% of stroke survivors have hand impairment. A majority do not fully recover their hand function despite completing standard rehabilitation. Limited hand function results in learned non-use not only of the hand but also of the whole arm. This limited upper limb movement results in decreased independence and poor quality of life. It is known that training for proper movement patterns is important especially early in rehabilitation. The purpose of this project is to determine if training using hand exoskeleton to improve finger movement is feasible in stroke patients. Stroke survivors will receive training with 4 different control strategies to improve finger joint coordination.

Hand disability after stroke has a profound negative impact on functional ability and independence. Hand therapy may be augmented with sensory stimulation for better outcomes. We have developed a novel sensory stimulation - unfelt vibration applied via a wristwatch. In this study, we will determine if combining this stimulation with hand task practice is superior to hand task practice alone.

The purpose of this study is to determine if 3-dimensional finger force training is an effective tool in restoring hand function post stroke. Persons who survived a stroke 3 to 12 months ago and have a hand impairment will be eligible to participate in this study. Participants will be asked to come to the laboratory to practice controlling the finger force generation 3 times a week for 6 weeks. Participants will see their performance on a computer screen. Participants will also come to the laboratory for additional 4-7 visits for assessments of their upper extremity function. The total duration of the study will be 2.5 months.