Dual brain-machine interfaces restore natural movement sense for prosthetic limb users
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Neuroscience News
Summary
Researchers have developed dual brain-machine interfaces that restore kinesthesia—the sense of muscle movement and joint position—for prosthetic limb users. By unifying data from two distinct BMI systems, the team discovered how the brain subconsciously organizes prosthetic movement, moving beyond standard vibration-based sensory feedback that often creates conflicting tactile signals. This breakthrough enables more natural, intuitive motor control for amputees by recreating the sensory feedback loop that is severed during limb amputation.
Source
bskyDual brain-machine interfaces restore natural movement sense for prosthetic limb usersneurosciencenews.comKey quotes
· 4 pulledKinesthesia, the sense of muscle movement and joint position—is the foundational feedback loop required for natural, intuitive motor control.
When a patient undergoes a limb amputation, this vital sensory loop is severed, forcing users of standard prosthetic devices to rely entirely on visual tracking to guide their movements.
While bioengineers can use mechanical vibration to stimulate residual muscle fibers and recreate a phantom sense of motion, these vibrations typically bleed into the skin, sending conflicting tactical signals that overwhelm and confuse the brain's sensory mapping.
Researchers unify data from two unique brain-machine interfaces to discover how the brain subconsciously organizes prosthetic movement.
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