New Neurons Help Us Remember Fear (IMAGE) University of California - Berkeley Caption Emotional information from the amygdala promotes maturation of adult neural stem cells into new neurons in the hippocampus. These neurons can be activated by fear during a critical 2-4 week period after birth, helping to imprint a memory of the fearful situation. Without input from the amygdala (right), the hippocampus produces fewer new neurons. Credit Daniela Kaufer lab, UC Berkeley 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.