Professor Catherine Harmer, an expert in emotional processing and depression, shares insights into the brain mechanisms behind depression. She delves into the effects of antidepressant medications on emotional responses, revealing how cognitive biases shape perceptions in those affected. Catherine also discusses innovative treatments, including rapid-acting antidepressants and brain stimulation. Additionally, she offers advice for graduate students on navigating research challenges and emphasizes the importance of balancing academic pursuits with personal passions.