Global Emerging prosthetic sensory feedback techniques will provide some sensation and enable more natural, intuitive use of hand prostheses

Jaunuary, 2019 | Source: Profshare Market Research

Emerging prosthetic sensory feedback techniques will provide some sensation and enable more natural, intuitive use of hand prostheses, These breakthroughs pave the way to the development of a prosthetic limb with the ability to feel." While wearing the artificial hand, a person is able to distinguish between hard, soft, round and square objects even while blindfolded and wearing earplugs.  


Current robotic prostheses approach the fine dexterity provided by the human hand -- but these advances have outpaced developments in providing sensory feedback from artificial limb. "The lack of sensation was the key limitation to reestablishing the full functionality of the natural limb.  


"Humans have an innate sense of how the parts of their bodies are positioned, even if they can't see them," "This 'muscle sense' is what allows people to type on a keyboard, hold a cup, throw a ball, use a brake pedal and do countless other daily tasks."The scientific term for this muscle sense is proprioception, many scientist had worked for years to develop technology that would allow amputees to receive proprioceptive feedback from artificial limbs.  


Building a viable prosthetic hand—one that users can trust and integrate into their daily lives—requires that they recognize they have a hand without looking at it. When a user pulls open a door without looking at it, he or she needs to know where each finger is and feel the pressure of the door.Touch feedback and joint location sensing, known as proprioception, are two key developments in the prototypes for a prosthetic hand .Commercial prosthetic hands are severely limited in providing sensory feedback.  



Even though the sensation currents are sent through the forearm, the brain is remarkably adaptable and will rewire to associate the sensations in the forearm with movement in the fingers.Prosthtic hands and arms that has alredy been developed by scientist which can be controlled using thoughts by connecting electrodes to the remaining nerves in patient's shoulders.  


It is now hoped that by adding tactile functions to such prothesis, it could allow amputees to live completely unimpeded lives.However, scientists say that the development of such a fully functional "bionic hand" is still some years away, although the latest development provides a step in that direction. "The ultimate goal is to develop a prosthesis that closely mimics the natural limb, both in its ability to perform complex motor commands and to elicit conscious sensation." While many research challenges remain to be met, they believe that newer techniques like TMR, SRPNI, and optogenetics "represent the wave of the future, paving the way to more intuitive prosthetic control through sensory feedback."  


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