Originally published in 1984, the aim of this book was to interest clinical neuroscientists in the application of neurometrics to the evaluation of brain dysfunction in neurological patients. This methodology was hoped to produce substantial improvement in the neurological medical care of the general population at the time. In the previous 15 years, as a result of the development of minicomputers and their application to the quantitative analysis of electrophysiological phenomena, there had been a great expansion of knowledge about the electrical activity of the brain. This activity yielded a great variety of information about brain functions. Neurometrics is a methodology, based on quantitative measurements of the brain electrical activity, for evaluating anatomical integrity, developmental maturation, and the mediation of sensory, perceptual, and cognitive processes. This book focuses on practical clinical applications and the theoretical and experimental formulations on which these are based.