Investigative Human Neuroscience

Brain implants that translate paralyzed patients’ thoughts into speech creep closer to reality

In a new report published Tuesday in Nature Communications, Chang’s team has pushed that scientific milestone even further. By tweaking their system to recognize  individual letters of the NATO phonetic alphabet — Alpha, Bravo, Charlie, etc. — the device was able to decode more than 1,100 words from the electrical activity inside Pancho’s brain as he silently tried saying the letters.