In the corner, behind a curtain, visitors are donning electroencephalography (EEG) monitors and watching microscale videos designed to stimulate their brains into certain reactions. When the dimple goes down, Popian tells us, it represents concentration. The project is called Mental Fabrications, an art project aiming to map the mind’s mental landscape through a combination of EEG readings and 3D printing. That sounds simple, but it means tracing a dodgy transmission through a maze of different technologies, most of which have never been used this way before.