Transforming Robot-mediated Telerehabilitation: Citizen Science for Rehabilitation

Inclusion Criteria: For treatment group: * post-stroke hemiparesis \>3 months * ability to stand or sit independently * sufficient cognitive skills to perform the exercises as demonstrated * full passive range of motion in the affected arm but limited active movement as determined by a upper extremity Fugl-Meyer score of \<50/66 * technical savvy and interest to use an internet platform For control group: (ii) no history of learning disabilities (iii) technical savvy and interest to use an internet platform Exclusion Criteria: For treatment group: * visual deficit such as deficit in visual acuity, eye movements, visual field cut, or neglect * medical comorbidity such as other neurological conditions (e.g. Parkinson's disease, brain tumor, epilepsy), or previous injury to the upper limb * pain in the upper limbs that prevents full passive range of motion to perform the exercises. For control group: * visual deficit such as deficit in visual acuity, eye movements, visual field cut, or neglect * any previous injury or medical condition that prevents full passive range of motion to perform the exercises.