Serotonin plays an important role in mediating mood and anxiety disorders. This volume reviews neuronal circuitry relevant to a number of these conditions, such as major depression, generalized anxiety disorder, obsessive-compulsive disorder, panic disorder, post-traumatic stress disorder and social anxiety. This text addresses the relationship between neuronal circuitry and serotonergic agents and how those agents are effective in the treatment of these disorders. Psychiatrists, neurologists and pharmacologists will benefit from this volume.