3-D map of fly brain is to neuroscience what genome is to genetics: "The researchers constructed the map using what they call a reverse-engineering approach. They deconstructed a fly brain into thousands of single neurons (representing about 10 percent of the neurons in the entire fly brain) and then put them back together into a common standardized framework to produce a virtual fly brain. The resulting three-dimensional map offers a view of the basic units of information processing and the major 'traffic' patterns that flow through them.
That 3D diagram of neural networks shows that the fruit fly brain consists of families of information-processing units linked by tracts. Specifically, the researchers identified 41 local processing units (LPUs), 6 hubs, and 58 tracts covering the whole fly brain."