Meeting of the minds.

• Position: COMMUNICATION - Brain-to-brain interfaces - Brief article

Some friends are so close they can practically read each other's minds. But in a groundbreaking experiment at the University of Washington, researchers actually connected two human brains for the first time. Seated in different parts of the campus, two scientists each slipped on a hat hooked up to the Internet and wired with a "magnetic stimulation coil," which can read and stimulate the brain. Then, just by thinking about it, one researcher sent a signal to the other's brain that forced him to move his right index finger to hit the "fire" button in a computer game. Technologists have been working for years to connect the human brain to a computer to...