Fig. 6.

Intra-RE inhibition during the initiation of bursts of RE cells can affect which RE cells burst, but not the time at which bursting begins for RE cells that do burst. A, The relative times at which RE cells begin to burst are plotted for networks with (open circles) and without (crosses) intra-RE inhibition. Both networks have the same spatially graded initial input to RE cells. B, To show how intra-RE inhibition affects the population of RE cells that do burst, the fraction of RE cells bursting is plotted as a function of distance from the center of the model slice. In the network with intra-RE inhibition (solid line), the boundary between RE cells that do burst and those that do not is much closer to the center of the model slice than in the network without any intra-RE inhibition (dashed line).