Abstract
For patients with lower-limb amputations, the lack of sensory feedback from prostheses contributes to impaired balance control, falls, and phantom limb pain. Our lab has previously shown that dorsal root ganglion (DRG) stimulation via penetrating microelectrodes evokes activity in sensory afferents projecting from the limbs, making it a promising approach for delivering sensory feedback after amputation. Epineural macroelectrodes, which cause less damage than penetrating microelectrodes, are an attractive alternative interface, but their size and distance from the tissue suggest lower stimulation specificity.
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