Figure 6
From: Neuronal avalanche dynamics indicates different universality classes in neuronal cultures
Size correlations. The quantity δP(Si + j/S i < λ) as a function of λ is depicted (see text for details). Qualitatively, the same behaviour is observed for both control (left) and folate reared (right) cultures corresponding to the recordings discussed in Figs 3 and 4, respectively. Shaded area show ± 1 standard deviation of the measure. Significant non-zero values of δP(Si + j/S i < λ) indicate correlations in the sequence of avalanche sizes. These correlations are particularly pronounced for j = 1 but disappear for larger j. Red curve shows the first j value at which correlations completely disappear (j = 8 for control and j = 50 for folate reared cultures). The positive slope of δP(Si + j/S i < λ) around λ = 1 indicates that it is more likely that an event is followed by events similar in size, compared to what would be expected if event sizes were independent.
