In a groundbreaking development in the field of bionics, a U.S. man has successfully controlled an artificial arm and performed daily tasks using only his thoughts, marking a major leap forward in brain-computer interface technology. The achievement, reported by *The Times* and other media outlets, highlights how neural implants could one day help severely disabled individuals regain mobility and independence.
Published in *Nature*, the research details over 30 years of work that has led to this milestone. Matthew Nagel, a 25-year-old from Massachusetts, suffered a spinal injury in 2001 after being stabbed, leaving him paralyzed below the neck. In 2004, he underwent an experimental procedure at Rhode Island Hospital, where a small chip was implanted into his brain. This device, known as the "brain-machine-neural interaction system," allows for direct communication between the brain and a computer.
The implant features 100 ultra-fine electrodes, thinner than a human hair, which are placed on the motor cortex of the brain—the region responsible for voluntary movement. These electrodes penetrate the brain through tiny holes and pick up electrical signals from nearby neurons. The signals are then sent via wires to a titanium base on the scalp, which connects to a computer. When Nagel imagines moving his body, the system decodes these brain signals and translates them into commands that can control devices like a robotic arm or a computer cursor.
Over nine months, Nagel learned to perform various tasks, including moving a cursor, opening emails, playing simple games, adjusting TV volume, and even operating a robotic arm. He could do many of these actions while talking, suggesting that mental control doesn’t require constant focus. One notable success involved controlling an artificial hand—without the need for a visual cursor, he was able to open and close it simply by thinking about it.
Professor John Donoghue, who led the study, said the results show great promise. “One day, people may use brain signals to stimulate muscles directly, restoring natural movement through the nervous system,†he explained. For Nagel, the implant has been life-changing. “This is amazing,†he said. “After my injury, I felt frustrated for two years. Now, it's the third year, and this implant is incredible.â€
Despite the progress, researchers emphasize that the technology is still in its early stages and requires further refinement. While the current system enables basic movements, future improvements could allow users to control wheelchairs or more advanced prosthetics with greater precision. Scientists believe such advancements will significantly enhance the quality of life for those with severe disabilities.
This breakthrough brings us closer to a future where the line between human and machine becomes increasingly blurred, offering hope and new possibilities for millions around the world.
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