Neuroscience is inherently interdisciplinary in its quest to explain the brain. Like all biological structures the brain operates at multiple levels, from nano-scale molecules to meter-scale systems. Within only 17 years, the 21stcentury has changed neuroscience. After decades in which molecular neuroscience was pre-eminent, systems neuroscience is now in ascendance. New technologies have made it possible to map neural circuits in vivo, to visualize neuronal activity in real time, and to manipulate neural activity in behaving animals. This book is designed to synthesize and critically assess research trends in experimental and clinical neuroscience at the molecular level. It highlights the progress at the forefront of contemporary molecular brain research. The book is specifically designed to synthesize and critically assess research trends for all neuroscientists at the cutting edge of this dramatically developing area.