Prosthesis Gives Amputee Sensation

In recent years, bioengineers have made great strides in the design of prosthetics, integrating technologies that make artificial limbs more lifelike and give amputeesgreater control over their use. Under development by one team is a bionic hand that allows the user to “feel” the objects it is grasping. Their prototype possesses sensors that send electrical signals to electrodes implanted in nerves in the arm of the wearer, providing sensory feedback that in recent tests allowed a user to identify the shape and stiffness of objects by touch alone. More…


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