Dynamic Biological Networks: The Stomatogastric Nervous System - Allen I. Selverston - Google Books

http://books.google.de/books?id=peaBuQeZIwYC&pg=PA43&lpg=PA43&dq=preaxon&source=bl&ots=PpjXLQ2Z-8&sig=MDSsSbAF7ZDFhZCc4fOqcUHxbg

This introduction to the crustacean stomatogastric nervous system (STNS) describessome of the best-understood neural networks in the animal kingdom at cellular, network, behavioral,comparative, and evolutionary levels of analysis.