In recent years, several symposia have been held on subjects relating to the general theme of information processing in the nervous system. It is now widely recognized that this whole field is rapidly developing and changing in a manner beyond our imaginings of a few years ago. When confronted with conceptual revolutions of this kind, it is justifiable to have a continued on-going discourse and disputation so that there is maximum opportunity for interaction between the leaders of thought in all the re lated disciplines. The conference organized by K. N. Leibovic, and held at the State University of New York at Buffalo from October 21st to 24th, 1968, made a notable contribution to this interaction. It is fortunate that there is here being published, not only the papers contributed to the sym posium, but also much of the stimulating discussion. The term "neuronal machinery" can be validly used because there is now good understanding of the operational mechanisms of at least some of the neuronal centers in the brain, and our knowledge of these mechanisms is progressing in a most encouraging manner. The stated objective by Prof. Leibovic, the organizer of the symposium, was that it was designed to cor relate neuronal machinery with psychophysiological phenomena. He calls attention to the urgency of achieving a common conceptual basis for neuro anatomy, neurophysiology, and psychology."

Converging lines of biological, perceptual and theoretical approaches are brought together in The Science of Vision to give a new perspective on the brain sciences and vision in particular. The book contains contributions from experts in the fields of biophysics, physiology, psychology and computation. While reviewing some basic knowledge, it mainly presents fresh ideas and includes some new results. The topics range from cells through perception to neurocomputing and are treated in depth, taking the specialist to the frontiers of research. At the same time the book is written in a manner understandable to the nonspecialist, in keeping with the multidisciplinary appeal of the subject. A glossary of terms also makes the book easy to read. In our age of specialization, this integrated approach is a welcome addition to the literature which will further interdisciplinary research and shed new light on the vision sciences.