Safety and Feasibility of an ExoNET for Supination Assistance for Stroke Survivors

Inclusion Criteria: 1. Between the ages of 40-70 (to reduce confounding effects of aging on muscle, movement accuracy and proprioception) 2. Have sustained a single, unilateral stroke at least 8 months prior to enrollment 3. Severe to moderate upper extremity impairment (ARAT score 0-30) 4. Ability to move their elbow and wrist when supported against gravity 5. Cortical stroke with hemiparesis, tactile sensation 6. Available medical records about lesion locations indicating the stroke was caused by a middle cerebral artery ischemic infarct Exclusion Criteria: 1. Bilateral paresis 2. Diffuse/multiple lesion sites or multiple stroke events 3. Hemispatial neglect or visual field cut that prevent visual feedback 4. Shoulder pain and/or articular rigidity on the upper limb joint 5. Severe sensory deficits indicated by the Two-Point Discrimination Test 6. Botox injection to the affected upper extremity within the previous 4 months 7. Aphasia, cognitive impairment, or affective dysfunction that would influence the ability to consent, perform the experiment, or follow commands 8. Concurrent participation in upper extremity rehabilitation either as part of a research intervention protocol or a prescribed therapy 9. Other neurological issues 10. Meet any of the contraindications to Delsys Trigno Sensors: * Implanted with electronic devices of any kind, including cardiac pace-makers or similar assistive devices, electronic induction pumps, and implanted stimulators * Irritated skin or open wounds * Silver allergy