A new study published in Nature Medicine shows that a 47-year-old man with ALS, Casey Harrell, used a brain-computer interface at home for nearly two years without researcher support. - He communicated over 183,000 sentences and nearly 2 million words.
- The system achieved 99% word accuracy with a 125,000-word vocabulary. - Harrell used the BCI independently for 3,800 hours, sending emails and browsing the internet.
The findings mark a significant step toward practical assistive technology for people with severe motor impairments.