Anime cat ear headbands have been around for a long time. But these, developed by Neurowear, can be controlled with your thoughts. At least, that's the bold claim that the company makes about the "Necomimi". Just concentrate to make them stand up.
http://www.japantrends.com/cat-ears-controlled-by-your-brain/ via CrunchGear
Sure: maybe it is "theoretically" possible. (I'm not even sure of that, but let's assume for the sake of argument.)
But there is a BIG difference between something that is "theoretically" possible and something that is "plausible".
Plausible means (imo) that it is realistic under the circumstances. What they propose in this article in my opinion is not plausible under the circumstances.