This fully updated and revised, 2nd edition will significantly help the visual analysis of EEG by neurologists and other specialists as well as technologists. The book retains the format and presentation that made the first edition successful. It is the most comprehensive EEG atlas on activation procedures, artifacts and normal EEG, covering the full spectrum of normal and unusual patterns observed during wakefulness and sleep, in children and adults. Electroencephalograms are shown in their native format, exactly as they appear in daily practice. Each plate is analyzed, in order to highlight the most significant elements to be used in diagnosis and interpretation. What is new in this edition: 120 new plates out of 180 : 2/3 of the book has been renewed; More physiological rythms, more examples by element; A new and larger size of the book for a better readability; All the plates, including the ones from the first volume, have been updated, and the presentation is much more precise and practical; The principal, full-size plate presents recording speed standard at 30 mm/sec, and is then used in a second plate (figure a) at 15 mm/sec, thus offering a global, more comprehensive vision. This is the only atlas worldwide offering two speeds. All plates have been printed and scanned in high definition, which gives the book an unprecedented quality, compared to other atlases presenting a simple screenshot. All plates come from digitized recordings, compared to other atlases with analogue recordings.