Table 2. Overlap in significantly activated voxels at the individual and group level across both time points for CS discrimination.

Level	Phase	Coeff.	ROI
			Whole brain	Insula	Amygdala	Hippocampus	Caudate	Putamen	Pallidum	Accumbens	Thalamus	dACC	dlPFC	vmPFC
(A) Individual	Acq	Jaccard	0.076	0.075	0.011	0.012	0.039	0.037	0.018	0.017	0.033	0.132	0.080	0.039
		Dice	0.131	0.121	0.018	0.021	0.057	0.058	0.029	0.024	0.055	0.189	0.118	0.061
	Ext	Jaccard	0.007	0.001	0.000	0.000	0.001	0.000	0.000	0.000	0.001	0.003	0.001	0.005
		Dice	0.014	0.001	0.000	0.000	0.001	0.000	0.000	0.001	0.001	0.006	0.002	0.009
(B) Group	Acq	Jaccard	0.620	0.595	0.294	0.323	0.613	0.740	0.747	0.441	0.834	0.898	0.895	0.045
		Dice	0.765	0.745	0.448	0.472	0.760	0.847	0.855	0.595	0.910	0.946	0.944	0.086
	Ext	Jaccard	0.057	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.044	0.014	0.000
		Dice	0.108	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.085	0.028	0.000

Note. Results are shown for the whole brain as well as for selected regions of interest (ROIs) for fear acquisition training and extinction training. Both coefficients range from 0 (no overlap) to 1 (perfect overlap). Note that the Jaccard can be interpreted as % (Maitra, 2010). NAcc = nucleus accumbens; dACC = dorsal anterior cingulate cortex; dlPFC = dorsolateral prefrontal cortex; vmPFC = ventromedial prefrontal cortex.