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MIT's AMI improves sensation, control of Prosthetic Limb

2,120 views · Published 31 May 2018 · 3:04 · Indexed 29 October 2026

Channel: Rajamanickam Antonimuthu · 2018 · Science & Technology

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Humans can accurately sense the position, speed, and torque of their limbs, even with their eyes shut. This sense, known as proprioception, allows humans to precisely control their body movements.

Despite significant improvements to prosthetic devices in recent years, researchers have been unable to provide this essential sensation to people with artificial limbs, limiting their ability to accurately control their movements.

Researchers at  the MIT Media Lab have invented a new neural interface and communication paradigm that is able to send movement commands from the central nervous system to a robotic prosthesis, and relay proprioceptive feedback describing movement of the joint back to the central nervous system in return.

This new paradigm is known as  AMI i-e agonist-antagonist myoneural interface. It involves a novel surgical approach to limb amputation in which dynamic muscle relationships are preserved within the amputated limb. The AMI was validated in extensive preclinical experimentation at MIT prior to its first surgical implementation in a human patient at Brigham and Women’s Faulkner Hospital.


Image: MIT Media Lab/Biomechatronics group. Original artwork by Stephanie Ku.
Video Source: MIT
http://news.mit.edu/2018/surgical-technique-improves-sensation-control-prosthetic-limb-0530


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