science
In 2023, researchers helped people who had lost the ability to speak by reading brain signals and turning them into words on a screen.
These systems generated words by recording brain activity through electrodes while a paralyzed participant attempted to speak, even without actual sound or vocal cord movement. AI software decoded which neural patterns corresponded to which intended words and translated that into text, with some systems even synthesizing an artificial voice.
Scanning vocal cords would require them to be functioning, exactly what paralysis from stroke or ALS prevents. Detecting only eye-blink patterns describes an older, slower letter-by-letter method, distinct from decoding attempted-speech signals directly.
Some systems reached dozens of words per minute, a big improvement over older aids, offering hope for ALS patients, where speech is often lost even though the intention to communicate remains fully intact.
science
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