Researchers stimulated the nerves of the amputated arm with signals very similar to the natural ones, succeeding in "imitating the colors" of the evoked sensations of the various types of receptors and related nerve fibers present in the fingertips of the hand. This has brought greater realism and greater functionality of the feelings experienced by patients. Over the years, various solutions have been developed to restore tactile information to people with limb amputation. However, this information is still far from those of the human hand in terms of naturalness and effectiveness. The solution to this important clinical and scientific problem is in a new research published on Neuron, one of the most prestigious journals in the field of neuroscience, by a group of researchers of the Sant'Anna School of Advanced Studies, of the École Polytechnique Fédérale de Lausanne (EPFL), of the University of Freiburg in Germany and of the Policlinico Gemelli in Rome. The working group coordinated by Prof. Silvestro Micera, professor of Bioengineering at the BioRobotics Institute of the Scuola Superiore Sant'Anna, and Bertarelli Chair in Translational Neuroengineering at the EPFL, has in fact developed a code capable of transmit for the first time to the nerves of the amputated arm all the variety of perceptions that it would have received from the nerve fibers connected to the tactile receptors of one's hand and then communicate the information useful for the movement in an extremely natural way.
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