Cluster-size thresholds from 3dClustSim ran over the estimated ACF for each of the 198 data sets in the Beijing-Zang cohort. The x-axis is the cluster-size threshold assuming a Gaussian-shaped ACF, with FWHM taken from the mixed model ACF estimate for each subject. The y-axis is the cluster-size threshold assuming the mixed model ACF of Eq. (3); the parameter estimates are computed from the residuals from the pseudostimulus B1, blur = 6 mm time series analyses. The left graph is for per voxel p threshold 0.010; the right graph is for p = 0.001. Approximate linear fits are shown overlaid; the dashed gray line shows x = y, providing a reference to indicate the disparity in cluster-size thresholds between the Gaussian and mixed-model ACF assumptions. Darker circles indicate points where multiple subjects had the same pair of thresholds (which are integer valued). Cluster-size thresholds are taken from the NN = 2, one-sided test table output from 3dClustSim (which also output tables for NN = 1 and NN = 3, and for two-sided tests).