Figure 7.

Spatio-temporal patterns in the absence of subthreshold oscillations. Snapshots of Movie S5. The figure illustrates the spatio-temporal patterns observed in a network model of 50 × 50 neurons electrically connected to their four nearest neighbors with g_c = 0.05 mS/cm². The individual dynamics in this case does not contain subthreshold oscillations, just spiking activity. In the simulation illustrated here we achieve this behavior by applying a constant current injection (I_inj) in the whole population (Figure 2). Sequences are equivalent to those shown in Figure 4, developing in time from left to right with a time interval between frames equal to 3 ms. When the subthreshold oscillations are not present, the spatial topology of the patterns remains nearly constant.