Prepared by noted experts in sleep medicine and neurology, this practical atlas is an indispensable reference for anyone performing or interpreting polysomnographic studies. It contains 220 polysomnograms recorded with state-of-the-art digital equipment at a leading sleep disorders center and electrodiagnostic laboratory. The illustrations are accompanied by detailed legends that explain both common and unusual findings.The atlas shows normal polysomnographic features of wakefulness and the various stages of sleep, as well as findings characteristic of breathing disorders, sleep-related movements, parasomnias, cardiac arrhythmias, and nocturnal seizures. Also included are examples of artifacts and a clearly written technical introduction.