Scratching mice (IMAGE) Washington University School of Medicine Caption Researchers at Washington University School of Medicine in St. Louis have identified a pathway in the brains of mice, independent of the visual cortex, that is activated when the animals see other mice scratching. Credit Chen Lab/Washington University School of Medicine Usage Restrictions None License Original 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.