Can you rewire your brain so that you don't feel anxious all the time. Is neuroplasticity real? Do people with anxiety disorders have different brains. I look at research into anxiety disorders and the brain. MRI scans of people with generalised anxiety disorder, panic disorder and PTSD reveal some fascinating insights into how anxiety works in the brain and how activity in the amygdala, hippocampus and pre frontal cortex indicate if you have an anxiety disorder. MRI images before and after CBT prove that it is an effective treatment for anxiety disorder