A discovery may lead to new treatments for anxiety, depression and post-traumatic stress disorder (PTSD). Scientists have discovered that new brain cells are produced in the adult amygdala, a region of the brain important for processing emotional memories. Disrupted connections in the amygdala, an ancient part of the brain, are linked to anxiety disorders such as PTSD. The research marked a major shift in understanding the brain's ability to adapt and regenerate.
During a depressive episode, people often report having reduced energy, feeling slowed down and having reduced interest in activities. As their mood lifts, energy and activity return to their usual levels. A new study altered measures of daily activity in patients whose depressive symptoms improved in response to the fast-acting antidepressant ketamine.