TABLE 5.

Group × Perceptual certainty interactions.

	Perceptual Certainty (d’) effects
Location	X	Y	Z	Voxels	F-stat
Group × d’
Caudate nucleus	−16.9	−15.1	22	15	17.51
Insula	−34.1	−22.0	18	14	14.20
Pre-/Postcentral gyrus	−47.9	−18.5	38	23	13.66
Pre-/Postcentral gyrus	48.4	−25.4	66	37	25.01
Postcentral gyrus	−65.1	−11.7	42	47	18.70
SupraMarginal gyrus	69.0	−18.5	46	27	18.26
Superior temporal gyrus	−44.4	−15.1	−6	16	13.51
Posterior cingulate cortex	0.3	−46.1	6	15	18.90

The brain areas associated with the interaction of Group and Perceptual Certainty (d’). X Y Z = the location of the voxel with peak intensity in each cluster; Voxels refers to the number of voxels in the region of overlap. F-stat refers to the F statistic from the voxel with the highest F statistic in the cluster.