The Structure of the Nervous System of the Nematode Caenorhabditis elegans

By J.G.White, E.Southgate, J.N. Thomson and S.Brenner, F.R.S.

Phil. Trans. R. Soc. Lond. B3141–340
Published 12 November 1986

Datasets: White_A - White_L4 - White_whole

Type of Connectomics Data

• Anatomical connectome: chemical synapses; electrical gap junctions

Summary

• Showed the first connectome of the adult hermaphrodite C.elegans via electron microscopy
• Consolidated the naming scheme of the 302 neurons
• Established the criteria for identifying chemical synapses and gap junctions from electron microscope reconstructions.

Reliability of data

1. Human error: when following long featureless process bundles, it resulted in switch processes.
2. Many processes run close to plane of sectioning and so it provides images with indistinct objects leading to problems in identification
3. Similar errors of process identification in area of poor image quality caused by dirt or loss of sections on grid bars