Topic: split-belt locomotion

Previous studies of cat and human locomotion have suggested that the nervous system organizes activities of multiple muscles in five muscle groups (muscle synergies) receiving synergy-specific time-dependent inputs. Two synergies contain flexor muscles and two-joint hamstrings and are active during the swing phase and swing-stance transition; the remaining three synergies consist of extensor muscles and two-joint thigh muscles and are active during the stance phase and stance-swing transition. Given a possible locomotor CPG organization, we hypothesized that split-belt locomotion with faster b