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• W4387553487 abstract "Lower limb loss is a major insult to the body’s nervous and musculoskeletal systems. Despite technological advances in prosthesis design, artificial limbs are not yet integrated into the body’s physiological systems. Therefore, lower limb amputees (LLAs) experience lower balance confidence, higher fear of falls, and impaired gait compared with their able-bodied peers (ABs). Previous studies have demonstrated that restored sensations perceived as originating directly from the missing limb via neural interfaces improve balance and performance in certain ambulatory tasks; however, the effects of such evoked sensations on neural circuitries involved in the locomotor activity are not well understood. In this work, we investigated the effects of plantar sensation elicited by peripheral nerve stimulation delivered by multicontact nerve cuff electrodes on gait symmetry and stability, speed perception, and motor adaptation. We found that restored plantar sensation increased stance time and propulsive force on the prosthetic side, improved gait symmetry, and yielded an enhanced perception of prosthetic limb movement. Our results show that the locomotor adaptation among LLAs with plantar sensation became similar to that of ABs. These findings suggest that our peripheral nerve–based approach to elicit plantar sensation directly affects central nervous pathways involved in locomotion and motor adaptation during walking. Our neuroprosthesis provided a unique model to investigate the role of somatosensation in the lower limb during walking and its effects on perceptual recalibration after a locomotor adaptation task. Furthermore, we demonstrated how plantar sensation in LLAs could effectively increase mobility, improve walking dynamics, and possibly reduce fall risks." @default.
• W4387553487 created "2023-10-12" @default.
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• W4387553487 date "2023-10-18" @default.
• W4387553487 modified "2023-10-13" @default.
• W4387553487 title "Plantar somatosensory restoration enhances gait, speed perception, and motor adaptation" @default.
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• W4387553487 doi "https://doi.org/10.1126/scirobotics.adf8997" @default.
• W4387553487 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37820003" @default.
• W4387553487 hasPublicationYear "2023" @default.
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