Neuronal Fibers in Human Brain (IMAGE) Massachusetts General Hospital Caption This is a diffusion spectrum MR image of human brain showing curvature of two-dimensional sheets of parallel neuronal fibers that cross each other at right angles. Credit Van Wedeen, M.D., Martinos Center for Biomedical Imaging, Massachusetts General Hospital 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.