September 4, 2012 22:40
The first time scientists had made sure that the person lying in the unit of magnetic resonance imaging, was able to control the robot, located hundreds of miles away, with the thought. "Our ultimate goal is to create a substitute, such as Avatar, but this remains to be done , "said the director of the robotics laboratory of the National Institute of Industrial Science and Technology in Tsukuba, Japan, Abderrahmane Kheddar.
Remote controlled robots, controlled remotely by people has been used for decades. But Kheddar and his colleagues went on. "The present incarnation goes far beyond the classic telepresence, it gives you the opportunity to feel the thing in which you incarnate as a part of yourself," says Kheddar. "And this is what we want to feel." To achieve this, researchers from the international "Project Virtual Performance" used machine magnetic resonance imaging to scan the brain of a university student Tiro Shapira at the time, as he represented, what moves the various parts of the body .
He tried to send a virtual avatar, presenting, driving his right or left hand or his nogami.Skanner measured the changes in blood flow to the primary to motor cortex of the brain, and with the help of this data, researchers were able to create an algorithm that can navigate through the various visualizations of movement. Next, the team received were sent via the Internet to the little robot at the Technological Institute of Bezier Frantsii.Dannaya scheme allowed Shapira control the robot in near real-time by thinking, and the camera, mounted on the robot's head, allowing him to see his perspective. When he thought of going right or left hand, the robot rotated thirty degrees to the left or right. The idea of moving the legs forced robot move vpered.Chtoby test the degree of realization of feelings, the researchers prepared a surprise in the form of a mirror. "I really felt like I was there," says Shapira. "At one point there was a gap control. One of the researchers raised the robot to see what was wrong with him, and I have felt like, "Oh, put me in my place!". Brain can be very easily deceived, it can be made to feel the external entity as its own. About ten years ago, psychologists discovered that you can convince people like rubber hand belongs to them, just putting it on the table before him, and squeezing her just like a real hand. "We consider the question of what other sensory illusions we can implement the next stage of the project to increase the sense of realization," says Kheddar. One of these illusions can be a stimulating muscles to create a sense of dvizheniya.Uchenye also fine-tune the algorithm to find the exact patterns of brain activity, rather than just watch the activation of different brain areas. This will allow each thought process to monitor a larger set of movements. "For example, you can think about moving your fingers at different rates, and it will be broadcast at different speeds, or turn to the robot," said Cohen, who presented the results of tests to translate the conference BioRob 2012 Rime.Do still incarnation of the surrogates engaged only healthy people. Now researchers are hoping to team up with a group of similar team Adrian Owen of the University of Western Ontario in Canada to test their surrogates for paralyzed people. "I think it's great that we are working on the possibility of communication with the world for people who are locked in a paralyzed body or in general are in a vegetative state, "says Owen. He, however, warned that they still have a long way to go before this technology can really provide long-term assistance patsientam.Tehnologiya electroencephalography (EEG), which uses electrodes attached to the scalp to record the electrical activity of the brain is likely to be more practical than nuclear magnetic imaging, he says, because it is cheaper and easier to use for a long time. Although EEG has been used to control robots received signals were not as crisp as with MRI. And yet, this demonstration is "an interesting example of what can be possible in the near future," said Owen.