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. 2013 Dec 16;8(12):e81660. doi: 10.1371/journal.pone.0081660

Figure 6. Eigenvalue spectrum and eigenvectors of the spike count correlation coefficient Inline graphic matrix.

Figure 6

(A) The spectrum of the correlation matrix of a homogenous pseudo-population of 30 neurons, with input correlations of Inline graphic, and Inline graphic is shown,. The inset shows the largest eigenvalue (circle) and mean of all other eigenvalue (diamond) as function of population size. (B) The eigenvectors of the correlation matrices A are shown by the different colors. The thick blue lines show the eigenvector that corresponds to the largest eigenvalue.