During this week's Emerging Technology Conference at the Massachusetts Institute of Technology, one researcher presented a video of a guy playing the original Doom game using his brain waves.
To be more precise, the player used a joystick to move around, but he used his mind only to fire the gun.
"What I'm here to tell you is that this is not science fiction. This is an emerging reality," Wadsworth Center research scientist Gerwin Schalk said.
The player's (and other test subjects') alpha brain waves were captured through medical devices that were already wired to their brains as part of their treatment of illnesses such as epilepsy.