The field of motility continues to evolve rapidly. The "Schuster Atlas of Gastrointestinal Motility" has an expanded scope both in depth and breadth from the first edition. It includes more information in areas covered by the first edition, as well as new discoveries in previously unexplored areas. In keeping with the traditional concept of an Atlas, this text focuses on descriptions of techniques using graphic pictorial tracings to illustrate diagnostic and therapeutic applications of motility studies in clinical disorders. The book is intended to help health care providers further their appreciation and understanding of gastrointestinal motility and its, disorders, enhance their diagnostic accuracy and thereby improve the treatment of patients with motility disorders of the digestive tract.