L>R as well as R>L was tested in the tbss_sym 1-sample test of FA asymmetry. If the peak FA data is extracted with fslmeants (with use of a thresholded and binarized corrp_tstat1 mask), I assume that although the 1-sample option tests if the mean > 0, a two-sample t-test (e.g. Welch, Wilcox) could be run to test left vs right side FA? This is somewhat redundant but supplements the randomise and cluster report output.
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