In this volume outstanding specialists review the state of the art in
nervous system research for all main invertebrate groups. They provide a
comprehensive up-to-date analysis important for everyone working on
neuronal aspects of single groups, as well as taking into account the
phylogenesis of invertebrates. The articles report on recently gained
knowledge about diversification in the invertebrate nervous systems, and
demonstrate the analytical power of a comparative approach. Novel
techniques in molecular and developmental biology are creating new
perspectives that point toward a theoretical foundation for a modern
organismic biology. The comparative approach, as documented here, will
engage the interest of anyone challenged by the problem of structural
diversification in biology.