Restoring sensorimotor function through sensory stimulation and advanced prostheses
Wednesday, February 23, 2022 4pm to 5pm
About this Event
For upper limb prosthesis users, the lack of tactile feedback can make moving and grasping difficult. A major step in developing closed-loop prostheses is providing the sense of touch back to the user to improve function. We developed an electronic dermis (e-dermis) fingertip tactile sensor for producing biomimetic spiking responses to capture nuanced touch information during grasping. We investigated the use of noninvasive electrical stimulation of peripheral nerves to provide sensory feedback and improve perception to individuals with limb amputation using a neuromorphic stimulation model. Not only are we able to provide a range of tactile sensations but we are also able to improve prosthesis control as a result. Recently in a translational study, we also demonstrated the benefits of long-term, unconstrained prosthesis use outside the laboratory for improving motor function. Finally, we will discuss the role of direct brain stimulation for providing and altering tactile sensory perceptions in individuals through a brain-machine interface.
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