Noise correlations underlying synergy and redundancy. A, Temporal evolution of Apop and Ashuff for the two sessions from Figure 4. In Session 1, shuffling increased the texture information conveyed by the population, whereas in Session 2, shuffling decreased the information. Error bars indicate SEM across repeats. B, Synergy plotted against relative gain compared to shuffling. There was a clear correlation between synergy and the relative gain. C, Behavior of the relative gain compared to shuffling, as a function of the number of clusters, for all sessions and subsets of clusters. Error bars indicate SD across combinations of clusters.