A brain implant can decode a person’s internal chatter — but the device works only if the user thinks of a preset password 1. The mind-reading device, or brain–computer interface (BCI), accurately ...

Mark Jackson is playing a computer game with his mind. As he reclines in bed, three blue circles appear on a laptop screen a few feet away. One turns red: the target. Jackson is in control of a white ...

BCI (brain-computer interface) technology — in which neural signals are routed from a person’s head to a computer — was once the stuff of science fiction, but these days the technology represents a ...