Symmetrical Brain Response (IMAGE) University of Pennsylvania School of Medicine Caption Stimulating the left or right eye in normal sighted individuals results in a symmetrical brain response shown as yellow areas in the visual cortex located in the back of the brain. This is because each eye is connected to both sides of the brain roughly equally and the connectivity of the visual pathways is alike. Credit Illustrated by Elena Nikonova Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.