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It even has a sort of kinesthesia; it can feel when you move its robotic arm or head.

This kind of awareness, called kinesthesia, is missing from prosthetic limbs—especially advanced, motorized ones.

Now, researchers have recreated the feeling of kinesthesia in six arm amputees by sending finely tuned vibrations into the skin of their upper arms and shoulders.

But the bodily and muscular sensation that is the actual province of the science of kinesthesia doesn’t really have much to do with this art.

Stimulating muscle tendons in the nonoperated hand created a perception of movement, or illusory kinesthesia, in the injured hand without causing pain or actual movement, the study said.