The perception of the world around us is mediated by a complex neuronal machinery. Sensory structures such as eyes and ears capture physical energies and transform them into neural signals. Neural pathways then transport them from these structures to the central nervous system. Finally, central processing mechanisms integrate these signals into a vivid experience of the “reality” that guides our behaviour. By nature, the information that reaches the central nervous system is noisy, incomplete and generally ambiguous. I will introduce you to the sophisticated strategies by which the brain resolves these ambiguities to eventually come up with something that feels like a solid, reliable, and predictable reality which seems to exist independently of ourselves and our brains. Dr. Nikolaus Troje joined Queen's University as a Canada Research Chair in Vision and Behavioural Sciences. He is now a Full Professor in the Department of Psychology, the Department of Biology, and the School of Computing at Queen’s and an Adjunct Professor at the Centre for Vision Research at York University. At Queen’s he is the director of the BioMotionLab.