What if a person could derive the same kind of benefit from a mind-controlled videogame?

WSJ: Mind-Controlled Videogames Become Reality

But some doctors believe mind-controlled games can provide more than fun and relaxation, by improving mental health.

WSJ: Mind-Controlled Videogames Become Reality

When a skeptic approaches in disbelief that the ears are mind-controlled, Hoffman and Masius offer the ears up for a trial.

FORBES: Emoki: Animal Ears You Control With Your Mind

And while the mind-controlled set we saw last year was certainly cool, it didn't offer much in the way of accuracy.

ENGADGET: Haier's Eye-Control TV set, we go eyeballs on (video) HD

Michael Brody, a psychiatrist who teaches at the University of Maryland, cautions that mind-controlled games are useful only if they move beyond the novelty stage and become a standard part of patients' mental health regimens.

WSJ: Mind-Controlled Videogames Become Reality

The eye-controlled TV we saw at IFA last year was getting quite a lot of attention, while the mind-controlled set we've also seen before was almost certainly playing a looping video to give the illusion something was happening.

ENGADGET

Many entered, but it was Daniel Orren who sent in a great green-screened video that snagged him a temporary spot on the Engadget crew at this year's CES. Hanging with the team in our trusty trailer, getting comped meals, roaming the floor, wearing mind-controlled cat ears -- honestly, it's probably just easier to list all of the things the photographer didn't do the other week in Vegas.

ENGADGET: Features