Many people dread experiencing the cognitive and mood declines that often accompany reaching an advanced age, including memory disorders such as Alzheimer’s disease and mood conditions like depression. While searching for new ways to prevent or treat these and other related conditions, a team at Baylor College of Medicine and the Jan and Dan Duncan Neurological Research Institute (Duncan NRI) at Texas Children’s Hospital identified a missing piece of the puzzle of how memory and mood are sustained and regulated in the brain.