Summary Based on models of human perception, this paper investigates the influence of artificial sensory feedback on prosthetic gait. A simple static neuromechanic model of a transfemoral prosthesis and amputee perception reveals possible effects during stance phase. To analyze swing phase, an observer model of the prosthesis is implemented using an Extended Kalman Filter. While standing, feedback of the Center of Pressure may improve perception, whereas during gait amputees do probably not profit from additional information. A clinical case study would have to reveal whether the theoretical analysis correctly determines the effects of feedback on amputee locomotion.
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