"Neuroplasticity" refers to some change in the nervous system as a function of age and/or experience. A key question is whether the various forms of neuroplasticity described for different species and in different areas of the nervous system are related. The present volume attempts to address this question by providing a broad survey of many of the major areas of neuroplasticity research by many of the leading investigators in the field. The topics considered range from the molecular to behavioral levels for species ranging from C. elegans to humans. In addition, the effects of development and neuropathological events are discussed. A final summary chapter attempts a general theory of neuroplasticity. "Toward a Theory of Neuroplasticity" represents the first attempt to bridge the complex and diverse subject area of contemporary neuroplasticity. This book will provide data, reference and insights for both students and working scientists interested in this field.