Injectable LEDs Send Light Coursing Through Your Brain

People inject all kinds of unhealthy things into their bodies for fun, but most stick to illegal drugs and stop short at electronics. But that doesn't mean it's not possible; scientists have developed LEDs so small you can shoot them up, and they literally light up your brain. Designed by researchers at the University of Illinois, the new tiny LEDs are small enough to fit through the eye of a needle, operate wirelessly, and are flexible for minimum discomfort and danger. You'd never inject these into your arm though. Instead, they're designed to be brain implants. Many neurons can be activated with bursts of light, and the wireless LEDs could allow for deep brain stimulation without any pesky, invasive electrodes.