This third edition of the standard reference on the nervous system of the rat is a complete and updated revision of the 1994 second edition. All chapters have been extensively updated, and new chapters added covering early segmentation, growth factors, and glia. The book is now aligned with the data available in the "Rat Brain in Stereotaxic Coordinates", making it an excellent companion to this bestselling atlas. It is designed to be used in conjunction with the bestselling "Rat Brain in Stereotaxic Coordinates". New to this edition is inclusion of physiological data, functional concepts, and correlates to human anatomy and function in each chapter. It contains new chapters on early segmentation of the central nervous system, growth factors and glia.