Context is known to affect how a stimulus is perceived. A variety of illusions have been
attributed to contextual processing—from orientation tilt effects to chromatic induction
phenomena, but their neural underpinnings remain poorly understood. Here, we present a
recurrent network model of classical and extra-classical receptive fields that is constrained
by the anatomy and physiology of the visual cortex. A key feature of the model is the
postulated existence of two spatially disjoint near-vs. far-extra-classical regions with …