Table 3.

Effect of subject set size for the number of clusters found and ARI

Number of clusters	sim	data#1	data#2
ICBM15	9	14	12
ICBM25	16	15	18
ICBM37	19	23	22
ARI between data sets	sim	data#1	data#2
ICBM37 vs. ICBM25	0.52	0.31	0.34*
ICBM37 vs. ICBM15	0.30	0.27	0.31*
ICBM25 vs. ICBM15	0.35	0.37	0.30*

Results for both simulated (sim) and real ICBM data sets (data#1 and data#2) are presented. ARI values for the real data sets were computed across the whole brain (228,483 voxels), and ARI values for the simulated data were computed across the activated brain areas (72,577 voxels). The neighborhood size used in the analysis was k = 225 according to the previous simulation results. Spatial maps for more detailed comparison are available for the results marked with asterisks (Figs. S10–S12, see Section 8 in Supporting Information).