Figure 2.

(A) Spatial configuration of the network. Black open disc represents the 1080 excitatory neurons, red crosses represent the 270 inhibitory neurons. (B) Spatial configuration of the excitatory input to the network. Inhibitory neurons are omitted for clarity, as they do not receive any direct input currents. Black open discs indicate excitatory neurons not receiving any direct input. Coloured discs indicate excitatory neurons that receive an external input from four different circular stimuli of differing strength. Disc colour indicates input strength defined as the conductance of a membrane channel.