Over the past 25 years the amount of data pertaining to the GABAergic function in the basal ganglia has increased dramatically. GABA and the Basal Ganglia - From Molecules to Systems is a comprehensive review of the current state-of-the-art of knowledge about the neuroanatomy, neuropharmacology and neurophysiology of the basal ganglia, focusing on its GABAergic microcircuitry. It serves as a complete reference to the body of knowledge about the basal ganglia, its constituent neurons, and their interconnections. This volume is designed to serve as a convenient all-in-one review and reference for experienced basal ganglia researchers as well as an introduction to the functional organization of the basal ganglia and its GABAergic circuitry for students and researchers new to the field.