The findings appear in the journal Proceedings of the National Academy of Sciences. Visual images and other raw sensory data must reach the cerebral cortex to be perceived, but the data are often missing details when they are sent from the eyes to the visual cortex, the part of the brain responsible for seeing. Thus, our visual system regularly fills in extensive details to create enriched images that help us to understand and interpret what we see. A growing body of evidence suggests these "filled-in" visual signals are represented at early stages of cortical processing.