Fig. 13

Raster plots of neuronal firing for the network driven from subcritical and supercritical states. The network firing for subcritical, $\alpha =1.1,w=1\Rightarrow \lambda <0$ (a) and supercritical, $\alpha =0.9,w=1\Rightarrow \lambda >0$ (b) parameter sets. Here we investigate the system with a small external input ($h=1/N$) which drives the system slightly away from these fixed points. The red line indicates the level of firing in 1 ms bins. The subcritical case appears to give rise to smaller bursts and the supercritical case leads to a greater level of firing and longer burst activity compared with the critical system (see Fig. 3)