How is the intellectual activity of a person who has suffered a traumatic brain injury, brain surgery or stroke impaired? What methods can be used to make an accurate neuropsychological diagnosis of a disorder? What areas of the brain are associated with intellectual disability and how? How to find the mechanism (cause) of the violation? And finally, how to overcome the defect and restore intellectual activity in a person who has suffered brain damage? The reader will find the answer to all these and a number of other questions by reading this book. Intended for a wide range of specialists - defectologists and speech therapists, psychologists and neuropsychologists, teachers and students, scientists and practitioners.