Comment by mattkrause

I don't think there's anything we can simulate "completely", in the sense that a fire-and-forget model would subsequently go onto have a typical life.

The stomatogastric ganglion might be the closest. It is a network of three dozen neurons in the crustacean stomach. Like the worm, the wiring diagram is completely known and the physiology is easier to measure. Despite being very simple, it can generate intricate patterns of activity in the stomach muscles that let the crab/lobster/etc eat. Scholarpedia has the diagram and some references (http://www.scholarpedia.org/article/Stomatogastric_ganglion) Eve Marder, who has done a lot of pioneering work on this circuit, wrote a book (Lessons From the Lobster) that I'm looking forward to reading.

Don't be disappointed! A lot of media coverage tends to present new results as "we're almost there." In most cases, I think that's nonsense, but it's also exciting to think how many things there are left to discover and how fascinatingly complex the world is.