For the first time in the medical industry, the researchers successfully exploited the brainwave of a paralyzed man and turned what he wanted to say into the complete sentence on the computer screen.0: 00/3: 24 Southern Edward Chang in a neurological surgery will take years of editing and supplementing, but the study, reported Wednesday (July 14), marking an important turning point in the public Restore communication for people who cannot talk due to injury or illness. "Most of us don't know how lucky when you can communicate with words," said Dr. Edward Chang, an anatomist Neurology at the University of California (USA) and the leader of the research work said. "It's interesting to know that we are starting a new chapter, a new field to reduce the suffering of patients who have lost their possibilities" today, people cannot say or write due to being There are very few ways to communicate
. For example, the test man must use a pointer attached to the baseball cap, and he can only move the head to touch the words or letters on the screen. Some other devices can recognize the patient's eye movement, but they are limited and slow replacement to the discomfort. In recent years, experiments use artificial parts The mind controller helps people paralyzed with hand or drinking water with robotic arms - they imagine themselves moving and those brain signals are forwarded via computer to fake limbs
Based on that project, Mr. Chang's team developed "artificial communication nervous system" - a decoding device with capital waves used to control the sound of sound, the movements of lips, jaws, blades and larynx to create Each consonant and vowel. The man volunteered to test this device, was anonymous to protect its identity, was over 30 years old. Fifteen years ago, he suffered a brain stroke, causing him to be numbous and lost his ability to speak. The researchers transplanted the electrodes on the man's brain surface, in the area to take control of the voice. Then, a computer will analyze when he tried to say popular words like "water" or "Healthy", to learn how to distinguish between 50 words - which can create more than 1,000 sentences. When you are asked questions like "today you?" Or "Are you thirsty?", The device allowed the man to answer "I am very strong" or "No, I'm not thirsty" in the form of text instead of the word. David Moses, an engineer in the labor Mr. Chang's experience, said it would take 3 to 4 seconds to appear on the screen after the man "said". It is of course not as fast as saying, but faster than typing a answer
In an attached post, Harvard's neurologists, LEIGH HOCHBERG and Ms. Sydney Cash called this project "Positive works". They propose some improvements, and also said that if this technology continues to be developed, it can help people with injuries, stroke or diseases like ALS - The disease causes paralysis of people with it "stuck in the brain". Mr. Chang's laboratory spent many years to map the activity of the brain when it formed a sentence. Initially, the researchers temporarily put electrodes into the brain of volunteers who are undergoing surgery for epilepsy, so they can match the activity of the brain with the words. Then, they start trying Conduct experiments with a person who cannot say. So how do they know the device has interpreted the accurate words of volunteers? They started by asking him to try to say specific sentences like "please bring me the glasses" instead of answering open questions, and continuing so until the machine translates exactly most. Steps Next of the study included improving the speed, accuracy and vocabulary of the device, and maybe one day allows users to communicate by the computer created by the computer instead of the above word Screen.Hoai Vy (According to TheGuardian.com, July 15, 2021) . Dịch vụ:
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