Sharing the Road (2 of 2) (image) Salk Institute Caption Without communication between motor and sensory axons, the sorting between the fascicles breaks down and instead of reaching for muscles, some motor neurons leave their lane, make a U-turn and head back toward the spinal cord. Credit Images: Courtesy of Benjamin W. Gallarda and Shane E. Andrews, Salk Institute for Biological Studies Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.