Neurobiologically Realistic Determinants of Self-Organized Criticality in Networks of Spiking Neurons
Figure 2
Properties of hierarchically modular connectivity.
(a) Power-law, exponential and linear density scaling functions of the networks used in this study. (b) Dimensionless measures of wiring cost for each density scaling function in (a). The wiring cost was computed by equating synaptic cost with hierarchical-level number, and averaging the cost over all synapses. Hence, synapses in hierarchical level were assigned a cost of
, synapses in hierarchical level
were assigned a cost of
, etc. Approximate values of the network (c) clustering coefficient and (d) characteristic path length across a range of randomizations of each hierarchical topology. Color-coding is the same as in (a).