The last ten years has witnessed a resurgence of interest in stereotactic surgery although this has been mainly in the field of the comparatively simple stereotactic biopsy of intracranial tumours. There is also evidence of a returning interest in functional neurosurgery other than pain which has always sustained high levels of endeavour. The present work comprises selected papers from a much larger group of interesting and important communications to the European Society for Stereotactic and Functional Neurosurgery. They represent modern views on a wide variety of stereotactic surgical topics from internationally acclaimed experts in this field. The neurosurgeon who has little or no acquaintance with this fruitful sub-specialty will be surprised to find very broad applications of the technique which is gradually replacing many con ventional neurosurgical procedures. This is particularly evident in the papers on tumours but there is also a section on the treatment of vascular disease which marks an extension of neurosurgical practice. The Society has always regarded technical advances as important and some of the most recent devel opments appear in this book. Finally, an exciting new development of neural transplantation marks the beginning of what may be an important part of neurological surgery in the future.

Inhalt
Epilepsy.- Surgical Treatment of Epilepsy: Opportunities for Research Into Basic Mechanisms of Human Brain Function.- Stereotactic Investigations in Frontal Lobe Epilepsies.- Propagation of Focal Epilepsies and the Timing and Targeting of Surgical Interventions. Illustrative Case Reports.- Epilepsy Course in Cerebral Ganglio-gliomas: a Study of 16 Cases.- Experience with Orbital Electrodes in the Patients Operated on for EpilepsyResults of Temporofrontal Resections.- Design of an Intracranial Electrode for Monitoring.- Spasticity and Movement Disorders.- Some Basic Features of the Pathological and Normal Motor System Studied by Chronic Deep Electrodes.- Behavioural Responses to Cerebellar Stimulation in Cerebral Palsy.- Use of Intrathecal Baclofen Administered by Programmable Infusion Pumps in Resistent Spasticity.- Critical Approach to Intra-striatal Medullary Adrenal Implants via Open Surgery in Parkinsonism. Case Report.- Transplantation in Parkinson's Disease: Stereotactic Implantation of Adrenal Medulla and Foetal Mesencephalon.- Pain.- Clinical Use of Nociceptive Flexion Reflex Recording in the Evaluation of Functional Neurosurgical Procedures.- Intra-operative Spinal Cord Evoked Potentials During Cervical and Lumbo-sacral Microsurgical DREZ-tomy (MDT) for Chronic Pain and Spasticity (Preliminary Data).- Craniofacial Postherpetic Neuralgia Managed by Stereotactic Spinal Trigeminal Nucleo-tomy.- Spinal Cord Stimulation (SCS) in the Treatment of Postherpetic Pain.- CT-guided Percutaneous Cordotomy.- Myelotomies for Chronic Pain.- Tumours.- Differential Diagnosis Between Tumoural and Non-Tumoural Intracranial Lesions in Children: a Stereotactic Approach.- Natural History of Neuroepithelial Tumours: Contribution of Stereotactic Biopsy.- Stereotaxy of ThirdVentricular Masses.- Brain Stem Expanding Lesions: Stereotactic Diagnosis and Therapeutical Approach.- Tumour Recurrence vs Radionecrosis: an Indication for Multitrajectory Serial Stereotactic Biopsies.- Comments on Brachycurie Therapy of Cerebral Tumours.- Vascular Diseases.- Is Vasodilatation Following Dorsal Column Stimulation Mediated by Antidromic Activation of Small Diameter Afferents?.- Cerebral and Carotid Haemodynamic Changes Following Cervical Spinal Cord Stimulation. An Experimental Study.- Technical Progress.- CT-Guided Real Time Stereotaxy.- Transposition of Image-defined Trajectories into Arc-quadrant Centered Stereotactic Systems.- The Stereotactic Operating Microscope: Accuracy Refinement and Clinical Experience.