Clinical Aspects of Huntington's Disease.- The Neuropathology of Huntington's Disease.- Neurobiology of Huntington's Disease.- Mouse Models of Huntington's Disease.- Transgenic Rat Models of Huntington's Disease.- Large Animal Models of Huntington's Disease.- Therapeutic Strategies for Huntington's Disease.- Clinical and Pathological Features of Parkinson's Disease.- Symptomatic Models of Parkinson's Disease and L-DOPA-Induced Dyskinesia in Non-human Primates.- Neuroinflammation in Parkinson's Disease Animal Models: A Cell Stress Response or a Step in Neurodegeneration?.- Viral Vector-Based Models of Parkinson's Disease.- Transgenic Rodent Models to Study Alpha-Synuclein Pathogenesis, with a Focus on Cognitive Deficits.- Modeling LRRK2 Pathobiology in Parkinson's Disease: From Yeast to Rodents.- Models of Multiple System Atrophy.