In Japan，they're all ears for the latest in high­tech fashion.The stylish headgear(头饰)，a set of white ears that move according to the wearer's thoughts and emotions，is called “Necomimi”—“cat's ears” in Japanese.①With two brain­wave sensors，Necomimi can tell the emotional state of the wearer，expressing it through four different movements.The ears shoot up when the wearer is nervous or focused but flatten when the person is relaxed.During a specific activity like a game or reading a book，in which the user may be relaxed and focused at the same time，the ears swirl around in a circle.When brain activity is low，they move gently back and forth.