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Scientists have developed a tiny, injectable device that can control nerve activity to treat chronic pain and movement disorders without requiring surgery, batteries, or wires. The seed-sized technology is powered wirelessly from outside the body and has demonstrated promising results in early testing, potentially transforming approaches to pain management and neurological conditions. The wireless-powered device eliminates the need for surgical implantation and battery replacement, making it a less invasive alternative to current treatments. The breakthrough could have broad applications in treating various chronic pain conditions and movement disorders, opening new possibilities for personalized medical interventions.