Anterior Cingulate Cortex (image) NIH/National Institute of Mental Health Caption The anterior cingulate cortex (center) was over-activated when hoarding disorder patients had to decide whether to keep or discard their own possessions; it under-activated during decision-making about others' possessions. The left and right insula (upper left and right) similarly differentially activated in hoarding disorder patients during this task. This picture shows fMRI data superimposed on structural MRI scan. Credit David Tolin, Ph.D., Hartford Hospital Usage Restrictions None 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.