Idle Retinal Peripheries Diminish Spatial Wrapping

This article provides evidence that spatial wrapping can be suppressed by inactive retinal peripheries; a process that can achieved by significant reduction against the contrast between the background and the spatial wrapping stimulus. Significant contrast reduction deactivates the retinal peripheries due to the following reasons; first, the center-surround antagonism in the retinal peripheries may not signal the brain in extremely low contrast conditions. Second, reduced contrast constricts the pupil which disallows the retinal peripheries from receiving sufficient light rays to signal the brain effectively.