Figure 21

Scatterplot of IB interburst interval vs timing of SI cell, as in Fig. 20, but with the data points color-coded according to the number of spikes in the next burst. The number of spikes is sensitive to the timing of the SI cell. But even exact knowledge of the SI timing (“IB-SI”) and the number of spikes in the last burst (curve where the data point lies—see Fig. 20) is not always enough to determine the number of spikes in the next burst (color)