Cellular Changes in the Brain during Learning (image) Cell Press Share Print E-Mail Caption This is a schematic illustration of potential cellular changes underlying gray matter volume expansion and renormalization as detectable with MRI. Credit Wenger et al./Trends in Cognitive Sciences 2017 Usage Restrictions Credit Required. Share Print E-Mail 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.