Multivariate Autoregressive Modeling and Granger Causality Analysis of Multiple Spike Trains
Figure 6
Granger causality analysis of realistic Izhikevich-type networks of neurons. Granger causality analysis was applied to reconstruct the connectivity structure in three basic architectures—see Figure 1 for the full structure of the simulated populations. (a) Two cells with unidirectional causal connection. (b) Three cells with sequential connection. (c) Three cells with “common input” interaction. Note that in examples (b) and (c) the reduced 2-dimensional models do not reconstruct correctly the 3D causal relations, as expected.
