02/09/2026
Scientists in South Korea have developed a tiny wireless brain implant that can be controlled remotely over the internet, even from thousands of miles away.
Developed by researchers at KAIST and Yonsei University, the sugar-cube-sized device combines targeted drug delivery with a miniature micro-LED that can stimulate specific neurons using light. In a striking demonstration, researchers in Chicago controlled an implant inside a rat in Daejeon, more than 10,000 kilometers away.
The implant was tested in rats for four weeks. Researchers found that combining drug delivery with light-based neural stimulation reduced addiction-related behaviors in one experiment.
Its replaceable, magnetically attached drug reservoir could also make long-term experiments easier. The technology may eventually help researchers investigate brain circuits linked to addiction, depression, and neurodegenerative diseases.
Source: KAIST and Yonsei University; Science Advances, published July 29, 2026.