This volume describes the microsurgical approaches to all areas of the brain without the special techniques of tumor removal or aneurysm exclusion. The author has confined himself to show the anatomical characteristic features and their variations as well as the risks and techniques of approach to all target areas. A special chapter is dedicated to a detailed description of the trepanations to give the young neurosurgeons a concise overview. Then NMR representations in all three standard planes are shown which are important for the operative planning. The following chapters demonstrate the intradural, extracerebral, and intracerebral approaches to the well known and less well known target areas. Several space-occupying lesions are shown in cases where the selection of the approach is problematic. In contrast to his earlier publications, Professor Seeger has added extensive figure legends and text to his beautiful drawings.