Curbs Illustration (IMAGE) Johns Hopkins University Caption This is an illustration showing the portions of the brain involved in perception of a visual boundary, like a curb or a wall. Credit Soojin Park/JHU 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.