People Today, people who cannot speak or write because they areparalyzedhave very limited means of communication. It poses a challenge among researchers how to help this group of people communicate. Most recently, the research team was led by Dr.Edward Zhang, a neurosurgeon at the University of California, San Francisco in the United States. has created a way to control the brain waves of people who are paralyzed and unable to speak By turning what he intended to say into sentences on the computer screen.
The team has created a device to develop a “speech neuro-prosthetic” method to decode the brain waves that normally control sound. Muscle movements of the lips, jaw, tongue, and larynx transformed into consonants and vowels The test subjects were a man in his late 30s, paralyzed and unable to speak for 15 years from a stroke. The researchers implanted electrodes on a surface above the brain where speech is controlled. The computer then analyzes the patterns. When people are paralyzed trying to communicate something as general as "water" or "good" until finally distinguish between 50-word sentence could create more than 1,000sentence
of thein question, for example. “How are you today?” or “Are you thirsty?” The device prompted the man to respond. “I am fine” or “No, I am not thirsty,” which is not an understatement. The team envisions the next step is to improve the speed, accuracy, vocabulary of the device. Including making it possible to use computer-generated sounds instead of on-screen text.
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