Physiological Psychology is a branch of psychology that explores the relationship between biological processes and behavior. It examines how the brain, nervous system, hormones, and genetics influence thoughts, emotions, and actions. Researchers in this field often use techniques like brain imaging and animal studies to understand how physiological factors affect mental functions. This discipline is essential for understanding various psychological conditions, such as depression and anxiety, as it helps identify the underlying biological mechanisms. By studying the connections between physiology and behavior, scientists can develop more effective treatments and interventions for mental health issues.