Brain Features Point to Addiction Vulnerability (1 of 5) (image) American Association for the Advancement of Science Share Print E-Mail Caption The red coloring in these images represents areas where gray matter is abnormally increased in drug users, compared to controls. The blue represents areas where gray matter is abnormally decreased in drug users, compared to controls. The yellow shows white matter tracts, called fractional anisotropy or FA. FA is significantly reduced in both the drug users and in their siblings, which suggests that the white matter tracts work less efficiently. This image relates to a paper that appeared in the Feb. 3, 2012, issue of Science, published by AAAS. The paper, by K.D. Ersche at University of Cambridge in Cambridge, UK, and colleagues was titled, "Abnormal Brain Structure Implicated in Stimulant Drug Addiction." Credit Image © Science/AAAS Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. 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.