earlY Upper Limb Rehabilitation WIth EEG-Neurofeedback After Stroke

Inclusion Criteria: * Unilateral ischaemic or haemorrhagic stroke * Adult (18-80 years), both sexes * Stroke \< 3 weeks * Upper limb deficit defined by Shoulder Abduction Finger Extension score \<5 measured during the 7 days following stroke; i.e., patients predicted to have incomplete recovery * No participation-limiting comprehension problems * With or without homonymous lateral hemianopia; with or without visuospatial hemineglect * Free, informed and written consent signed by the patient or a member of the patient's family (in the case of a patient who is able to understand the information and give consent but has motor difficulties resulting in an invalid signature). * Affiliated to french social security Exclusion Criteria: * Ischemic or hemorrhagic brain stem and/or cerebellum involvement * Multiple strokes * Stroke \< 1 week; in order not to be deleterious by starting active rehabilitation too early after immediate stroke * Aphasia with major comprehension impairment * Contraindication to MRI * pacemaker or implantable defibrillator, * neurosurgical clips, * cochlear implants, * intra-orbital or encephalic metallic foreign bodies, * stents placed less than 4 weeks ago and osteosynthesis devices placed less than 6 weeks ago, * claustrophobia. (Patients who have undergone thrombolysis or thrombectomy may be included in the study.)