MRI Brain Images -- Exposed vs. Control (IMAGE) Boston Children's Hospital Caption The brain image at left is from a subject exposed to alcohol, cigarettes, cocaine and marijuana in utero, while the image at right is from a same-age, same-sex control with none of these exposures. Note that the cortical gray matter appears thinner in the exposed brain than in the control (black arrowheads). In addition, the subcortical gray matter appears fuller and more robust in the control brain (see arrows near top of image) than in the exposed brain. Credit Courtesy Christopher Watson and Michael Rivkin, MD, Children's Hospital Boston Usage Restrictions Please credit as indicated 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.