Al writes "Technology Review has a story about a start-up company that has developed a more-accurate and less-invasive way to read a patient's thoughts. Neurolutions, based in St Louis, has developed a small implanted device that translates signals recorded from the surface of the brain into computer commands. The device, which is less invasive than implants and more accurate than scalp electrodes, uses a grid of electrodes placed directly on the surface of the brain to monitor electrical activity. This technology is currently used to find the origin of seizures in patients with uncontrolled epilepsy before surgery. But the company says it could also help paralyzed patients control a computer and perhaps prosthetic limbs using their thoughts. Tests involving more than 20 patients have shown that people can quickly learn to move a cursor on a computer screen using their brain activity."
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