This edited book has the stated purpose of filling the gap between books on normal memory and books dealing with abnormal memory by focusing specifically on memory in neurodegenerative conditions. The editor has done so by organizing the book into three main sections representative of different perspectives on memory. Each of these sections, biological, cognitive, and clinical, are summarized to coalesce the respective viewpoints into a cogent state of the art perspective for each section. The editor's intended audience includes neuropsychologists, neurologists, psychiatrists, and neuroscientists.