The study was conducted on a paralyzed man who, at the age of 20, suffered a stroke that left him unable to speak.
Scientists at the University of California have created a brain implant that has helped a paralyzed person speak or type. He spoke more than 1150 words. Nature reports.
In particular, experts use deep learning and language modeling techniques. They developed a speech neuroprosthesis to directly decode whole words in real time from the cortical activity of a person with anarthria and paralysis when they try to speak. This approach showed promise for decoding accuracy and speed, but as a preliminary study, the focus was on an initial vocabulary of 50 words.
Later, scientists demonstrated real-time decoding of silent attempts to pronounce 26 alphabetic code words from the phonetic alphabet. After training, the participant completed spelling tasks in which they spoke sentences with a vocabulary of 1152 words in real time, using attempts to refrain from pronouncing the corresponding letter code words.
One of the disadvantages of the current approach is that it relies on code words rather than letters when writing. Although using these longer codewords improved neural discrimination, their use was less natural. In addition, the current results are limited to one participant.
Through deep learning techniques, language modeling, future communication neuroprostheses may allow users with severe paralysis and anarthria to control assistive technology and personal devices using natural which are silent speech attempts to produce intended messages.
Earlier it was reported that Korean scientists have created a holographic microscope that allows you to see through the skull and visualize the brain.
Mice were implanted with human tissue in their brains
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Source: korrespondent
