Virtual Reality and Exoskeleton Man-Machine Interface for Recovery of Spinal Cord Injury
Lei Feng network press: author of this article Samuel K. Moore, source spectrum, compiled by Lei Feng network (search "Lei Feng network" public number) exclusive compilation, refused to reprint without permission!
A team of scientists and engineers led by Duke University neuroscientist Miguel A. Nicolelis, claimed that a group of patients with spinal cord injuries recovered after walking with an Occulus Rift virtual reality instrument and robotic exoskeleton man-machine interface training. The ability to move the thigh muscles freely to feel touch and pain.
The results of this study were derived from a 12-month ergonomic experiment that allowed many patients who experienced major accidents to recover to a large extent. The scientists published their research results in the journal Scientific Reports.
In the treatment process, the non-invasive human-machine interface based on brain wave diagrams plays a very significant role. In virtual reality workouts, patients need to imagine themselves walking in a virtual scene. At the beginning, brainwaves will not capture brain signals related to walking.
"When you speak or move your hands, your brain will be active." Nicolelis said. "But due to bone marrow damage, the brain almost completely lost control of the lower extremities."
The haptic feedback system also assisted this training. Each patient had to wear a coin-sized vibrator sleeve on his arm. Every time the patient takes a step, these vibrators can generate a tactile signal. The signal on the grass is different from the signal on the sand.
With the help of Lokomat and Aertech's robotic walking trainer, the patients gradually moved their paces into the real world. They can also use the exoskeleton device controlled by the human-machine interface interchangeably - this device was demonstrated at the 2014 World Cup opening ceremony. Â
At a press conference, Nicolelis said that changing the patient's status is not the purpose of the study. "Our goal is to build prosthetics." He added: "After six months of training and demonstrations at the 2014 World Cup, we began to realize that these patients' nerves are slowly recovering."
"Previous studies have shown that many patients diagnosed with complete paralysis still have some intact bone marrow nerves," Nicolelis declared to the media. "These nerves may remain silent for several years because no signals are emitted from the cortex to the muscles. Human-machine interface training will reawaken these nerves. The number of surviving fibers is too small to communicate information in the cerebral cortex motor area. To the bone marrow nerves. Â
The purpose of this study is not to improve the neurological control of the limbs. Experts told National Public Radio that because there was no control group, plus virtual reality training and exoskeletal training were not separated, they could not learn the effects of various parts of the treatment and could not compare them with other treatments. Â Â Â Â Â Â Â Â Â Â Â Â
Nicolelis also said that although the trial took only 12 months, the patients actually received training for up to two years. He hopes that more people can pay attention to the degree of rehabilitation of these patients. They also plan to involve patients who recently suffered spinal cord injuries in the experiment (know that all previous participants had three to fourteen years of history) and see if timely treatment can allow them to recover in a short time.
Via spectrum
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