Pyramidal Tract Neurons (IMAGE) Howard Hughes Medical Institute Caption Using a whole-brain fluorescence imaging technique developed at Janelia, scientists captured axons of pyramidal tract neurons leaving the motor cortex. Credit MouseLight Project, Janelia Research Campus Usage Restrictions Must use with credit. 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.