The proceedings of the 12th Congress of the European Society for Stereotactic and Functional Neurosurgery in Milan contain selected contributions on surgery of Parkinson's disease, pain, psychosurgery, epilepsy, frameless stereotaxy, functional imaging, gene therapy and radiosurgery. The selection reflects the current status and progress in the field. The book is an update of the current methods and controversies and should serve those specialized in the field as a source of information and judgement. The foreword by Jens Haase unifies the views of both stereotactic and general neurosurgeons with great enthusiasm.