Visual Cortex Image (IMAGE) Harvard University Caption A slice of a rat's brain showing visual cortex neurons (green) and axons from the secondary motor cortex (red). Credit Courtesy of Grigori Guitchounts Usage Restrictions CC-By 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.