A swimming accident stole Keith Thomas’s arms. Six years ago. Now, a brain implant lets him drink from a cup. And eat. By himself.
Thomas lives in Massapequa, New York. When he agreed to the trial in 2021 he couldn’t lift his arms from the wheelchair. Today, he can move them. Again.
For me this is an incredible moment
Prof Chad Bouton knows this isn’t just about moving muscles. It is about rewiring. His team at the Feinstein Institutes (Northwell Health’s research arm) didn’t just send commands down the spine. They sent sensations back up. A “double neural bypass.”
Electrodes in his brain read the thought: move arm. The signal jumps over the broken spinal cord, bypassing the damage entirely, to make the limb obey. Then sensors in the fingers send data back. Touch. The circuit closes. The brain asks, the body moves, the hand feels the result. He can handle an egg shell without crushing it.
Does that even happen with machines? Usually not. But it happened here.
He felt his sister’s hand. He felt his dog’s fur. These aren’t ghost sensations. They are real signals, reconstructed and delivered straight to the sensory cortex.
The process is intense. Three years of training. 35 weeks with the active system. The strength gains are massive. 86% in the right arm. 62% in the left. He goes from unable to lift hands to his face to scratching his own nose. To wiping it clean.
Then came cortical mirroring. This part is strange and brilliant. They recorded Thomas’s brain activity when he imagined touch. Then they stimulated his brain with those same patterns while simultaneously stimulating his skin and spinal cord. It teaches the brain to listen again. After 25 weeks focusing on the right wrist, a numb region woke up. He gained sensation that stayed even after the devices were off.
Two years later, the gains remain. That’s the unexpected part. The plasticity isn’t fleeting.
Keith Thomas was 42 when the pool claimed his neck in July 2020 woke up to see a helicopter on his front lawn. The next day, nothing moved. Now he writes his name again in some sense, if not literally.
There is no clear limit to how much this can restore yet. More trials are needed. Different injuries require different maps. But for now, the impossible feels like Tuesday morning.
Maybe.
