| I’ve seen and built systems that are far less invasive — https://agenda.hep.wisc.edu/event/792/contributions/18594/at... With accuracy on par or better than described: > He eventually explained to the team that he modulated the tone by trying to move his eyes. But he did not always succeed. Only on 107 of 135 days reported in the study could he match a series of target tones with 80% accuracy, and only on 44 of those 107 could he produce an intelligible sentence. In fact, some of these successful efforts were done back in the early 2000s. From the article: > Researchers inserted two square electrode arrays, 3.2 millimeters wide, into a part of the brain that controls movement. When they asked the man to try to move his hands, feet, head, and eyes, the neural signals weren’t consistent enough to answer yes-or-no questions, says Ujwal Chaudhary, a biomedical engineer and neurotechnologist at the German nonprofit ALS Voice. The speed and accuracy does take a hit using external nodes, but brain implants are frankly dangerous. They come with serious risks. |