Brain-computer interface trials are taking off

Brain-computer interfaces (BCIs, devices that read electrical signals from the brain to help users communicate or control other devices) are rapidly advancing, with a growing number of people volunteering for trials. Casey Harrell, a man with ALS (a disease that causes paralysis), has spent nearly three years using a BCI that allows him to speak, work, and interact independently by decoding his brain signals into speech through electrodes implanted in his brain and connected to a computer. Multiple companies and research groups worldwide are now conducting BCI trials, with the number of trial volunteers and approved devices increasing significantly.