The Japanese company Neurowear has come out with a headband-based …. thingie … called the Necomimi. It’s a set of plush cat ears that are supposed to sense your mood and react accordingly, like a mood ring only weirder and on a much higher plateau of weird. The ears debuted at Comic Con, shockingly, and will retail for $99 if you want to walk around town telling people how you feel through plush cat ears.

From the LA Times:

The ears require four AAA batteries and have two little motors that help them perk up or droop, depending on the type of brainwaves a person is sending out. A small sensor that rests on the user’s forehead picks up on the electrical activity at the scalp, and tells the ears what to do accordingly.

If the wearer is relaxed, the ears droop; if the wearer is focused, they should stand straight up; and if the wearer is both relaxed and focused — what Brook and her colleagues call being “in the zone” — the ears wiggle.