Neuron Differences (IMAGE) RMIT University Caption Grey matter neurons in the outward folds (left) and inward folds (right), with differences highlighted in red. The study found that variations in neuron shape in these regions during the folding process correlate with genetic differences. Credit RMIT University Usage Restrictions Credit RMIT University 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.