Figure 3 | Scientific Reports

Figure 3

From: Inferring correlations associated to causal interactions in brain signals using autoregressive models

Figure 3

(a) Scheme of the analyzed motif. Red and blue arrows indicate inhibitory and excitatory projections, respectively. (b) Resulting matrix of GC. Nonzero values represent links with significant connectivity, which match with the physical network. (c) Matrix with the sGC ratio. Only values with significant sGC are represented (p < 0.05). Values near 1 represent predominant excitation; those close to -1 represent higher inhibition. Pairs with a single type of projection (excitatory or inhibitory) are correctly identified, although the projections from population 2 to 4 are considered excitatory, suggesting that excitation is monopolizing the functional connectivity.

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