Fig. 8.

Noise correlations among pairs of single units belonging to the same neuronal populations or when each single unit comprising a pair belonged to different neuronal populations. The latter is displayed by the middle box plot for the various stimulus conditions (t-test, *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001). Parameters for box plots similar to as in Fig. 6. See also Supplementary Fig. 8