This book is dedicated to the memory of two colleagues and friends, Amico Big nami and Hendrick Vander Los. They were both pioneers in their fields: Bignami on on togenesis and function of neuroglia, and Van der Los on brain plasticity and neuronal circuitry. Their ideas are further pursued by the authors in this book. Some of the chapters are products of a conference dedicated to these two scientists entitled "Recent Advances in Neurobiology: Plasticity and Regeneration." The conference was organized by the Insti tute of Developmental Neuroscience and Aging and sponsored by the Region della...