Figure 2.

The multiple spatial-scale modeling approach. (A) For simplicity, an individual neuron is modeled as a Poisson spike generator, with rate parameter determined by the leaky integral of weighted inputs from other units. (B) The population model, which allows for chaining a leaky integrator and a latch. (C) Correspondence of each circuit component to parts of a more classical model of a neuron. The axon hillock corresponds to a latch; the soma corresponds to a leaky integrator; shading indicates density of voltage-gated sodium-channels.