fNIRS Study of Effort-dependent Brain Activations During Pointing Movements of the Upper Limb in Post-stroke Patients and Healthy Subjects

INCLUSION CRITERIA For stroke subjects * Age ≥18 years; * Stroke-induced hemiparesis, chronic phase (\>6 months post-stroke); * Moderate upper limb paresis defined by an upper limb FMA score 20 pts \< FMA score \< 47 pts ; * Right-handed patient; * Patient having agreed to sign an informed consent form; * Patient affiliated to the French social security system. For healthy subjects * Age-matched participant, for each stroke subject included will be associated a control subject of the same age (to the nearest 5 years); * Right-handed participant; * Participant having agreed to sign an informed consent form; * Participant affiliated to the French social security system. NON-INCLUSION CRITERIA For stroke subjects * Cognitive impairment making participation in the study impossible; * Phasic disorders preventing comprehension of instructions and effective communication. For healthy subjects * Pathology of the dominant upper limb; * Cognitive disorders making participation in the study impossible; * Presence of labelled or unlabelled neurological disorders; * Persons under legal protection.