Physiologically Relevant Prosthetic Limb Movement Feedback for Upper and Lower Extremity Amputees
Technical Report,15 Sep 2015,14 Dec 2019
The Cleveland Clinic Foundation Cleveland United States
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The illusionary sensation of movement directly influences motor control through internal models. As a component of perceptual mapping of the limb muscles we are using a modified matching protocol to examine how the brain perceives vibration-induced illusionary input. This will help us to understand which muscles need to be vibrated to most effectively influence motor control. Mapping the upper and lower limbs of able-bodied participants created a library of possible perceptions and suggests that participant expectations about illusionary input affect perceptions. Mapping in amputee participants has shown that vibration-induced illusionary input to residual muscles can generate movement percepts. Differential performance of with illusory input during functional tasks was observed, indicating that this feedback is incorporated into movement planning. We have developed novel socket designs capable of integrating vibration tactors while accommodating or improving upon existing function. We explored different wired and wireless solutions to control the integrated vibration tactors in response to prosthesis movement. Upper limb participants who previously underwent targeted reinnervation surgery successfully completed functional testing wearing sockets with an integrated vibration tactor.
- Medicine and Medical Research