Multichannel surface EMG of the facial muscles during a 10-day biofeedback training of patients with synkinetic reinnervated facial nerve palsy

Introduction In 2012, a 10-day biofeedback training (BT) as a day hospital treatment in the Department of Otorhinolaryngology has been established to mitigate synkinesis and asymmetries in patients with chronic facial paresis (FP) with postparalytic synkinesis. The investigation aims to track sEMG changes during the program and to assess the efficacy of the intervention.