Brain Scan Reveals Cognitive Deficits in Older 'Cognitively Normal' HIV+ Individuals (IMAGE) Georgetown University Medical Center Caption The anterior cingulate cortex (lighted) is where researcher have found a task-switching effect that differs between HIV-negative and HIV-positive older adults. Credit Courtesy: Xiong Jiang, Georgetown University Medical Center 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.