Essentials of Polysomnography Author:William H Spriggs, BS, RPSGT Essentials of Polysomnography is a 615-page full color text designed specifically for sleep technicians and professionals. This textbook is written by William H Spriggs, who brought you Principles of Polysomnography, a textbook for sleep technicians that is used in hospitals, sleep labs, physician offices, and colleges and universities around th... more »e world. This author's latest book is the first to include the new recording and scoring rules presented in 2007, as well as the latest sleep disorder definitions and categorization presented in 2005. This text is designed around the board exam for sleep technicians, and includes 500 questions with answers and explanations. It is also ideal for training new sleep technicians and students interested in studying polysomnography, as well as physicians, sleep lab managers, DME reps, and sleep lab front office staff members.« less