TOP: Feasible COM acceleration space for SCI subject. BOTTOM: Corresponding optimal muscle stimulation levels for each of the 12 muscle groups under FNS feedback modulation.
For muscle nomenclature, preceding “L” or “R” denotes “left” or “right’ and following “s” denotes surface stimulation. Muscle abbreviations are as follows: GS = Triceps Surae (Soleus and Gastrocnemius), AD = Thigh Adductors, TA = Tibialis Anterior, RF = Rectus Femoris, ME = Gluteus Medius, ES = Erector Spinae.