This book will provide answers to various questions related to neuroscience. The concepts covered in the book include computational, cellular, cognitive, and clinical neuroscience. This book also includes researches discussing functions of brain using optical tools and social neuroscience. Recent developments in neuroscience have also been discussed at great length. The focus of the book is not only on the structure of brain but also on the function of brain, thereby presenting chapters which integrate researches of nervous system and brain together.