Figure 3

Null modes were not straightforwardly reflected in synaptic weight distribution, firing rates, pairwise correlations, or mean synaptic weights. (a) Correlation between modes of the sender and receiver areas with N = 100, 500, or 800 units and 50, 400, and 700 potent modes, respectively. (b) Connection weights between sender and receiver areas. Inset shows a portion of the figure. (c) Absolute mean pairwise correlation in different runs of the model where the percentage of null modes was altered. Vertical bars are standard error of the mean across 100 independent runs of the model. (d) Absolute mean synaptic weight in relation to the percentage of null modes. (e) Mean activity of the sender area versus null modes. (f) Gini index of the feedforward connectivity matrix. A threshold was applied to convert real-valued weights to a binary adjancency matrix where a given percentage of strongest connections was preserved.