"BrainNet: A Multi-Person Brain-to-Brain Interface for
Direct Collaboration Between Brains"
tl;dr: brain activity in two other people was used to 'recommend' next choices in a game, and the target brain even filtered when there was noise injected
my first thought and maybe yours: "a step towards cyberspace"
but an attempted brainwashing machine isn't a hard next step with this, IMO
it'd have to be the cult-style "it helps you think right" sales pitch, but yeah
anyway just keep it in mind if anybody offers you a "mind training" helmet any time soon, I guess
maybe their idea of what to train for ain't yours