Fast Random Permutation Tests Enable Objective Evaluation of Methods for Single-Subject fMRI Analysis

Figure 6

Mean number of voxels classified as nonwhite by the Ljung-Box test (1–10 time lags were tested and the mean number of nonwhite voxels for the 10 tests was saved). No spatial smoothing was applied to the estimated auto correlations prior to the Ljung-Box test. The number of nonwhite voxels for Gaussian white noise is included as reference (no whitening was applied to the noise).