Researchers have developed a new brain-computer system that allows the user to directly
Researchers from Stanford Universityconducted a study on a 65-year-old man with a spinal cord injury who had an electrode array implanted into his organ. Scientists described the experiment in the journal Nature.
“The main news of the research is very highspeed, ”said Cynthia Chestek, a biomedical engineer at the University of Michigan who was not involved in the development. "This is at least twice as much as that of similar devices, which is why the development got into the journal Nature."
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Scientists added that they have beenexperimented with allowing people to communicate directly with a computer using only thoughts, without verbal commands, hand or eye movements. This technology offers the only possible communication method for people who are unable to move due to a stroke or brain stem disease.
The most successful developments worked in such a way thatthe user had to imagine moving the cursor over the numeric keypad to select letters. During this time, electrodes register brain activity, and machine learning algorithms decode patterns associated with these thoughts and translate them into typed words. The fastest previous typing experiments allowed people to type around 40 characters (roughly 8 words) per minute.
Stanford researchers were able to increase thisthe speed is more than doubled by a system that decodes the brain activity associated with handwriting. In the new system, a participant who has been paralyzed for about ten years imagines the hand movements he would make to write sentences.
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