The 20 minutes are up sooner than I imagined. I peel the device from my forehead, remove the underlying disposable electrodes, replace my glasses. The difference, I must admit, is palpable: Everything seems more finely etched, crisper. I notice more details in the world around me, and the sense of dullness that three days spent listening to press pitches from moribund industry giants has draped over my brain seems to have been peeled away. Andrew’s experience is less dramatic—he says he definitely feels more relaxed, but you can’t get less anxiety than zero. The up elevator, meanwhile, doesn’t have the same ceiling.
Goldwasser is back. “How is it?” he asks. I tell him that I feel “overclocked,” and he laughs.

via I tried a brain-altering wearable that allows users to change their moods on demand – Quartz.