Ethical approval was granted (Psy11-259, Psy 11-032) and written informed consent was obtained from all participants and/or their legal guardian. Patients were screened and recruited from the Division of Neurorehabilitation, Department of Clinical Neurosciences, University Hospital and University of Geneva, Geneva, Switzerland by a senior consultant neurologist (BL). Patients were included if they were hospitalized for stroke rehabilitation, were able to undergo psychophysical testing and presented with a facial impairment according to the House-Brackmann criteria ≥2 15. They were excluded if they presented with acute pain in the oro-facial sphere (nominal question) or an additional neuro-muscular disease.