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Installed in the brain electrodes allow paralyzed from the neck down a man operate an automatic arm. All you have to think how much traffic wants to do. Thanks to the success of scientists from the California 34-year-old Erik Sorto able to independently reach for the drink for the first time since the days when at the age of 21, he was paralyzed after being shot with a firearm. His case described in the latest issue of the journal “Science”.
The electrodes, which were read control pulses arm automatic implanted patients so far in the area of the brain directly controlling the movement of the hand. But this time it has not been done. In the case of Eric Sorto it built it in the back of the parietal cortex area in which there is information about the planned traffic only. As a result, managed to make the robot arm movements are much smoother.
With the help of functional magnetic resonance apparatus has been studied earlier activity in the region, all accompanied by the patient himself wyobrażanym movements of hands, or eyes. Analysis of these records allowed the researchers on the basis of the same signal then identify which hand and how the patient would like to raise. This information is then allowed to move with the help of a computer installed next to the truck arm of the patient.
A study conducted jointly by researchers at the California Institute of Technology, the Institute of Medicine at the Keck University of Southern California and Rancho Los Amigos National Rehabilitation Center based on previous tests with the participation of both humans and monkeys.
Eric Sorto has been extremely good and determined patient who at the first attempt, sixteen days after surgery implantation of electrodes, began to move his arm only by force of will. To this day, he learned, among other things smoothly “give a hand” and serve drinks in his mouth and even play in the game “scissors, paper, stone”.
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