Visitors enter an area suggesting Plato's cave, where they are confronted by a carousel of shadows. Devoted to thought, the unit draws attention to the mind's misdemeanours when its perceptions are false. So isn't mental activity entirely independent of the body?

Quite the opposite: "networked" cognitive activities are inextricably linked in the production of representations or reasoning. Whether you imagine a spatial movement or really move, the same areas of the brain operate. It is as if you were walking in your head.