Evaluation of Second-Level Inference in fMRI Analysis

Figure 3

Stability plot for the number of correctly selected voxels in the simulation with low signal strength (SNR = 1) and for the high signal strength (SNR = 2.5); for differences in subject-specific variability (unequal) or identical subject-specific variability (equal); and for permutation-based inference and for parametric inference. FWE: familywise error correction, FDR: False Discovery Rate correction, and BCL: two-step procedure with a Bonferroni-like first threshold and minimal cluster size of 10. OLS: Ordinary Least Squares approach and WLS: Weighted Least Squares approach.