This authoritative and updated Atlas provides a comprehensive span of topics across all of sleep medicine, including old to futuristic approaches. It captures the significant changes and advances in the field and a wealth of new visual information available since the last edition. Edited and contributed by leaders in the art and science of sleep medicine, the Atlas highlights how the field of sleep medicine is truly a mix of several medical specialties. The field continues to rapidly evolve with research leading to some future directions. This Atlas remains a standard reference for Sleep Physicians, including Sleep Fellows and other trainees in Sleep Medicine, Sleep Technologists, and Sleep researchers. Robert Joseph Thomas Beth Israel Deaconess Medical Center Boston, MA USA Sushanth Bhat Hackensack-Meridian Health-JFK Medical Center Edison, NJ USA Sudhansu Chokroverty New Jersey Neuroscience Institute at JFK Medical Center Edison, NJ USA