I remember when I was a kid, (around 15 years ago if I had to guess), there was an exhibit at a science museum where they used EEG to make a ball move on a table. Then they set up a game where two people would wear EEG on opposite sides of the table and the ball would roll toward whichever person could get their brainwaves to match a certain pattern better. I think the idea was if you quieted your mind then you would win.
Seems interesting, I hadn't heard of this before. She seems to have to imagine an image of a thing to get the control to register, like a cricket jumping to make her character jump, which actually seems more difficult than just playing with a physical controller or keyboard/mouse, since I don't think I actually "think" about making those sorts of movements. It seems like it would be cumbersome having to imagine the movement everytime, but maybe it becomes 2nd nature for her while she's playing like this.
I wonder if there could be a feedback loop on something like it too where if you see your character walking then they'll continually walk because you're actively seeing/imagining it?
I had that thing. It did "work;" just not how you'd expect and not very well. Kinda like a PowerGlove. Games that didn't require much movement were playable; but I got it because I figured I should be able to aim way faster in Counter-Strike with my mind than with my hands on a mouse.