In 2020, Keith Thomas suffered a devastating accident when he dove into a pool and broke his spine. The injury left him paralyzed from the chest down, unable to move or feel his arms and legs. Confined to a hospital room during the pandemic, he volunteered for a groundbreaking clinical trial aimed at restoring sensation and movement through a cutting-edge brain implant.
The researchers designed the device to reestablish communication between his brain, body, and spinal cord. Using AI, the system translates Thomas’s movement intentions into muscle-activating pulses, while fingertip sensors send touch back to his brain. Within a year, he could lift a cup, wipe his face, and feel his dog’s fur again.
Encouraged by the results, researchers at the Feinstein Institutes and Zucker School of Medicine asked: if a brain implant can restore one person’s movement, could it also control another’s muscles?
A recent preprint suggests that such “interhuman” links might indeed be possible. Using only his thoughts, Keith Thomas was able to move the hand of a healthy volunteer through carefully targeted electrical stimulation of her muscles.
Sharing Movement and Sensation
The team also tested the multi-person neural bypass with Kathy Denapoli, who has partial paralysis and difficulty moving her hand. By sending his brain signals through the system, Thomas helped her pour water—and, remarkably, he later sensed the texture of the objects she touched.
Though it sounds like science fiction, this method could revolutionize rehab—letting patients guide each other. By sharing movement, Thomas helped Denapoli nearly double her hand strength.
As the researchers noted, this technique “not only restores elements of sensorimotor function,” but also “fosters interpersonal connection—enabling individuals with paralysis to regain a sense of agency, touch, and shared action through another person.”
How Your Brain and Body Work in Perfect Harmony
We move through daily life effortlessly—pouring coffee half awake or catching a ball without thinking. Behind these simple actions lies a complex circuit: the brain sends commands through the spinal cord to activate muscles, while sensory nerves feed touch and temperature back to fine-tune every motion.
For people with spinal cord injuries, this loop is broken. Now, brain and spinal implants are helping bridge the gap. Tiny electrodes record brain signals that AI algorithms decode to control muscles or robotic limbs, while sensors restore a sense of touch.
Keith Thomas’s implant represents a leap forward. It connects his brain, spine, and muscles simultaneously, translating his thoughts into movement and sending sensory feedback to his brain.
The Moment Touch Returned After Years of Silence
Over time, Thomas regained control of his arms and felt his hand again for the first time in three years.
“There was a time I didn’t know if I even wanted to live,” he said. “Now, I can feel someone holding my hand. It’s overwhelming—and if this can help others even more than it’s helped me, it’s worth it.”
To help people recover from paralysis or speech loss, scientists are developing brain-computer systems that translate thoughts into movement or even emotion.
In a new study, researchers connected Keith Thomas’s brain implant to a healthy volunteer acting as his “avatar.” The volunteer wore electrode patches on her arm linked to Thomas’s brain signals. When Thomas imagined movement, his neural activity triggered her muscles, allowing her to grasp and lift objects.
Mastering Touch Through Neural Feedback
During training, Thomas learned to distinguish between objects—like a baseball or foam ball—by touch feedback sent to his brain, achieving over 90% accuracy even while blindfolded.
The system also helped Kathy Denapoli, a woman with partial paralysis. Guided by Thomas’s brain signals, she could pour water and lift a soda can nearly three times faster than on her own. Remarkably, Thomas began to feel the textures of the objects she touched.
By linking brain, spinal cord, and muscles, the implant may promote natural recovery. Thomas regained movement and sensation, and Denapoli’s grip strength improved.
Though still unreviewed, this “thought-driven therapy” could one day help people recovering from stroke or ALS. “I was more fulfilled helping someone in real life,” Thomas said.
Read the original article on: Singularityhub