Balance Rehabilitation With Sensory Recalibration After Stroke

Inclusion Criteria: * Right unilateral supratentorial ischemic or hemorrhagic lesion * Adult (age ≥ 18 years) under 80 years * Stroke * older than 9 months * with or without hemianopsia * with or without visuospatial hemineglect * The first symptomatic episode * Standing balance ≥ 30 sec unaided * Percentage of weight rests on the hemiplegic lower limb below 40% of body weight (on a platform of strength) * Written informed consent of the patient or a member of his entourage (in the case of patients with motor difficulties) Exclusion Criteria: * Orthopedic, rheumatologic or visual disorders affecting the distribution of the center of pressure while standing * Visual disorder that does not allow assessment of the longitudinal axis or visual straight ahead * Ischemic or hemorrhagic brain stem lesion * Trouble for understanding protocol procedures Inclusion Criteria for the healthy volunteers (ancillary study) : * Age ≥ 18 years, right-handed, sex and age-matched (+/- 5 years) to the patients of the coordinating center * Able to get an MRI * With no imbalance * With no visual disorder impacting the repartition of the center of pression when standing up, or that does not allow assessment of the longitudinal axis or visual straight ahead * Written informed consent