TY - JOUR T1 - Effect of Robotic Exoskeleton Motion Constraints on Upper Limb Muscle Synergies: A Case Study JF - IEEE Transactions on Neural Systems and Rehabilitation Engineering Y1 - 2021 A1 - Mcdonald, Craig G. A1 - Fregly, Benjamin J. A1 - O’Malley, Marcia K. VL - 29 ER -