Consistency of PCA across subsets of variables.

<p><b><i>A,</i></b> Independent PCA extraction using only histological variables demonstrated significant replication of PC1 extracted using the full variable set. <b><i>B,</i></b> Injury condition affected PC1_HISTO in an equivalent manner to the full-variable extraction (compare to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0059712#pone-0059712-g004" target="_blank">Figure 4E</a>). <b><i>C,</i></b> PCA extraction using only behavioral variables significantly replicated the full variable PC for PC1 and PC2, however the sequence of extraction reversed, indicating a reversal in variance explained by PC1_BEHAVIOR and PC2_BEHAVIOR. <b><i>D,</i></b> Scores of individual subjects on PC1-3 extracted from just-behavioral variables. The pattern for PC2_BEHAVIOR recapitulated PC1 from the full variable extraction (compare to Fig. 4E) and PC1_BEHAVIOR recapitulated PC2 from the full-variable extraction (compare to Fig. 4F). *<i>P</i><.05 for replication statistics, s>0.63.