Dystonia, Volume 169, the latest release in the International Review of Neurobiology serial, highlights new advances in the field with this new volume presenting interesting chapters on topics including Clinical Features and the Science of Classification, What Can Epidemiological Studies Tell us About the Neurobiology of Dystonia, Dystonia Genes and Their Biological Pathways, Functional Anatomy of Dystonia, Physiology of Dystonia: Human Studies, Physiology of Dystonia: Animal Studies, Experimental Pharmacology: Targeting Neurotransmitters, Experimental Pharmacology: Targeting Metabolic Pathways, Adult-Onset Focal Dystonias: One Biology or Many?, Early-Onset Inherited vs Late-Onset Idiopathic Dystonias: Same or Different Biological Mechanisms?, and much more.