words) 25 26Anticipating meaningful actions in the environment is an essential function of the brain. Such predictive 27 mechanisms originate from the motor system and allow for inferring actions from environmental 28 affordances, the potential to act within a specific environment. Using architecture, we provide a unique 29perspective to the abiding debate in cognitive neuroscience and philosophy on whether cognition depends on 30 movement or is decoupled from our physical structure. To investigate cognitive processes associated with 31 architectural affordances, we used a Mobile Brain/Body Imaging approach recording brain activity 32 synchronized to head-mounted virtual reality. Participants perceived and acted upon virtual transitions 33ranging from non-passable to easily passable. We demonstrate that early sensory brain activity, upon 34revealing the environment and before actual movement, differed as a function of affordances. Additionally, 35movement through transitions was preceded by a motor-related negative component also depended on 36affordances. Our results suggest that potential actions afforded by an environment influence perception. 37 38 39 40 SIGNIFICANCE STATEMENT (118 words) 41 42By using electroencephalography and virtual reality, our research provide a unique perspective to the 43 centurial open-ended debate in cognitive neuroscience and philosophy on the relation between cognition, 44 movement and environment. Our results indicate that cortical potentials vary as a function of bodily 45affordances reflected by the physical environment. Firstly, the results of this study implies that cognition is 46 inherently related to potential movement of the body, thus we advance that action is interrelated with 47 perception, actively influencing the perceivable environment. Secondly, as cortical potentials are influenced 48by the potential to move, which in turn is the task of architectural design, architects holds largely a privilege 49 of human health, and thus potentially capable of provoking and preventing physiological conditions. 50 51 52 53