Microcircuits

Microcircuits are fine level circuitry, and often refer to reconstructions of circuits of neurons and synapse-level connectivity. Since each of the 100 billion neurons in the human brain receives and makes about 10,000 synapses, the complexity of microcircuits rises dramatically. In fact, the only completed microcircuit reconstruction, which utilized ultrastructural electron microscopy mapping, was done in 1986 for the flatworm, C. elegans, whose nervous system contains only about 300 neurons.