Increased Gray Matter Volume Was Observed (IMAGE) Neural Regeneration Research Caption In low back pain patients, increased gray matter volume was observed in the bilateral putamen and nucleus accumbens, the left amygdala, the right caudate nucleus and the pallidum revealed by region of interest voxel-based morphometry analyses. Credit <i>Neural Regeneration Research</i> 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.