Chapter 1: Introduction A review of neural guidance The C. elegans nervous system
Chapter 2: Materials and Methods C. elegans neuronal nomenclature Electron microscopy Ablations Reconstruction Staging of reconstructed embryos Identification of neurons
Chapter 3: The Pattern of Outgrowth in Normal Embryos Morphology of growth cones The attachment substrate for growth cones AVG pioneers the ventral cord Motor neurons Later ventral cord interneurons Decussation in the preanal and retrovesicular ganglia Growth cone insertions into other cells
Chapter 4: Laser Ablation Experiments AVG DD3/5 PVP and PVQ DVC
Chapter 5: Discussion Reliability Motor neuron outgrowth and formation of the dorsal cord Discussion Selective fasciculation Conclusion

Chapter 6: Introduction and Methods Introduction Methods
Chapter 7: Synaptic Distributions and Reproducibility Synaptic distributions Adjacency and synapse formation Reciprocal synapses and joint chemical/electrical connections Connections between members of the same neuronal class Reproducibility of connections Reproducibility depends on the number of synapses made, not on adjacency Mismatches of chemical synapses are due to extra connections more often than to missing connections Connections are not determined purely by neuronal classes Differences between repeats of equivalent circuitry Connection formation and adjacency An underlying pattern of connectivity with additions? Localisation of synaptic specificity within neurons Conclusion
Chapter 8: The Logical Organization of the Circuitry Directionality The organisation of the feedback The processing depth Discussion
Chapter 9: Process Placement in the Nerve Ring Specific persistent contacts Identified bundles Discussion

Appendix 1: The statistical test for synapse number correlation with adjacency

Appendix 2: The sorting algorithm used to order the neural circuitry

Appendix 3: The method used to determine processing depth

Appendix 4: The clustering algorithm used to detect bundles