Figure 5.

Spontaneous and evoked network bursts show similar activation patterns. (a) Color-coded matrix of normalized distances among all pairs of NBs, both spontaneous and evoked, for a representative experiment. NBs have been re-ordered according to the pattern clustering procedure, run separately on spontaneous and on evoked patterns. Cluster and stimulated electrode numbers have been reported aside. (b) Maximum ratio of similar spontaneous and evoked NB patterns (as a measure of similarity), for each stimulated electrode as a function of the experiment number (x-axis). Each point represents a stimulated electrode, in black showing ratio >0.1, in red ratio <0.1. Statistical distributions of the same parameter computed between shuffled spontaneous and evoked patterns are reported for each experiment in the grey box-plots. The grey shaded area highlights the experiment shown in (a). (c) Scatter plot of the ratio of similar spontaneous and evoked patterns (already shown in b) as a function of the mean ratio of similar patterns in the corresponding spontaneous and evoked clusters. The red line indicates the best linear fitting (Pearson’s correlation coefficient 0.73, $\mathrm{p}=2.85\cdot {10}^{-12}$, adjusted R-square 0.53).