Supplement 1. MATLAB source code for the generation of a null model via matrix permutation methods and the test of the difference between pairs of correlation matrices.

File List Downloadable MATLAB files<br> permcorr.m<br> permcorr.txt<br> permdiff.m<br> permdiff.txt Description This supplement contains the MATLAB code files for testing the difference between pairs of correlation matrices via the generation of a null model with matrix permutation methods. <br> The MATLAB function permdiff.m calculates a sum of squared differences between elements of two input matrices and the probability that this difference is significantly different than zero. It invokes the function permcorr.m to randomly permute the input matrices and generate a null model. The files are provided in both a compiled MATLAB code format (i.e., *.m) and a text format.