Light is quietly becoming the new language of brain technology. Instead of thick wires and skull-penetrating electrodes, a new generation of implants uses tiny LEDs and optical sensors to send ...

Early brain development is a biological black box. While scientists have devised multiple ways to record electrical signals in adult brains, these techniques don’t work for embryos. A team at Harvard ...

As its whiskers flitter, the mouse’s brain sparks with activity. A tiny implant records the electrical chatter and beams it to a nearby computer. Smaller than a grain of salt, the implant is powered ...