Wrist speed feedback improves elbow compensation and reaching accuracy for myoelectric transradial prosthesis users in hybrid virtual reaching task

Journal of NeuroEngineering and Rehabilitation

Research

Eric J. Earley¹  Levi J. Hargrove²  Reva E. Johnson³  Jonathon W. Sensinger⁴ 

[1] Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL, USA;Department of Biomedical Engineering, Northwestern University, Chicago, IL, USA;Center for Bionics and Pain Research, Mölndal, Sweden;Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden;Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL, USA;Department of Biomedical Engineering, Northwestern University, Chicago, IL, USA;Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA;Department of Mechanical Engineering and Bioengineering, Valparaiso University, Valparaiso, IN, USA;Institute of Biomedical Engineering, University of New Brunswick, Fredericton, NB, Canada;Department of Electrical and Computer Engineering, University of New Brunswick, Fredericton, NB, Canada;

关键词: Sensory feedback;    Myoelectric prosthesis;    Center-out reaching;    Compensatory movement;    Motor adaptation;    Motor learning;   

DOI  :  10.1186/s12984-023-01138-3

 received in 2022-07-23, accepted in 2023-01-11,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundMyoelectric prostheses are a popular choice for restoring motor capability following the loss of a limb, but they do not provide direct feedback to the user about the movements of the device—in other words, kinesthesia. The outcomes of studies providing artificial sensory feedback are often influenced by the availability of incidental feedback. When subjects are blindfolded and disconnected from the prosthesis, artificial sensory feedback consistently improves control; however, when subjects wear a prosthesis and can see the task, benefits often deteriorate or become inconsistent. We theorize that providing artificial sensory feedback about prosthesis speed, which cannot be precisely estimated via vision, will improve the learning and control of a myoelectric prosthesis.MethodsIn this study, we test a joint-speed feedback system with six transradial amputee subjects to evaluate how it affects myoelectric control and adaptation behavior during a virtual reaching task.ResultsOur results showed that joint-speed feedback lowered reaching errors and compensatory movements during steady-state reaches. However, the same feedback provided no improvement when control was perturbed.ConclusionsThese outcomes suggest that the benefit of joint speed feedback may be dependent on the complexity of the myoelectric control and the context of the task.

【 授权许可】

CC BY   
© The Author(s) 2023

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