Paralyzed Man Regains Arm and Hand Function with Brain-Computer Interface

A man paralyzed from the chest down in a 2020 swimming accident has regained the ability to feed himself, drink, and even feel touch through a revolutionary brain-computer interface (BCI). Keith Thomas, from Massapequa, New York, was unable to lift his arms when he enrolled in a clinical trial in 2021. After undergoing surgery to implant electrodes in his brain and extensive training, Thomas achieved remarkable progress.

The BCI system detects Thomas’s intentions to move, routes these signals to his arms and hands, and also simulates touch by sending feedback to his brain. This closed-loop system has not only enabled Thomas to perform daily tasks independently but has also partly rewired his nervous system, restoring some functions even when the device is off.

Prof Chad Bouton, leading the research at the Feinstein Institutes for Medical Research, highlighted the breakthrough’s potential for millions worldwide. Thomas’s story, published in Nature Medicine, shows an 86% strength increase in his right arm and restored touch sensation through an innovative technique called cortical mirroring.

While the full potential and broader applicability of this technology are yet to be determined, the results are incredibly promising, especially given the lasting improvements observed over two years.