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. 2013 Aug 28;33(35):14048–14060. doi: 10.1523/JNEUROSCI.1977-13.2013

Table 1.

Principles of sensory neocortical circuitry

A1 S1BF
General dynamical features Capable of multineuronal emergent dynamics Yes Yes
Mean circuit size in a single 1.1 mm 2D imaged plane 155 ± 62 neurons 207 ± 123 neurons
Max circuit size in a single 1.1 mm 2D imaged plane 294 neurons 577 neurons
Component neuron firing related to circuit duration Yes: short durations Yes: short + long durations
Circuits flow perpendicular and parallel to pia Yes Yes
Fraction of cells showing temporal precision 0.38 ± 0.11 0.31 ± 0.13
Graph properties Fraction of graph that is sparse 0.9363 ± 0.0545 0.8902 ± 0.1074
Overrepresentation of bidirectional edges (x-fold) 4.51 ± 2.11 4.48 ± 3.70
Graph size (nodes) 595 ± 101 704 ± 157
Out degree distribution tail Smaller Longer
Topological flow characteristics Small world Yes Yes
Scale free Yes Yes
Modular Yes Yes
Hierarchically modular Yes Yes
Connection probability Falls with distance Falls with distance
Connection distances Biased toward local with some long connections Biased toward local with some long connections
Hub neurons Yes Yes
Modeling Dynamics sufficiently replicated by SNN model Yes Yes
Scalable to other networks by size modification Scalable to S1 Scalable to A1
Scalable from a small A1 network NA Yes, via preferential attachment