Table 3.

MNI coordinates and Z scores (cluster level corrected for comparisons across the whole brain, p < 0.05, with a voxel-level threshold of p < 0.001) for cerebral areas showing a main effect of group.

Region	x	y	z	Z score
Main effect of group
Healthy controls > ARMS
No Significant effect
ARMS > Healthy healthy controls
R caudate	10	14	8	4.43
R cingulate gyrus	6	18	28	4.20
L cingulate gyrus	−6	14	26	3.94
Group × task interaction
R cingulate gyrus	6	18	26	4.15
L cingulate gyrus	−4	14	30	4.05
Post-hoc two-sample t t-tests
Initiation condition
No significant effect
Suppression condition
ARMS > Healthy healthy controls
R cingulate gyrus	6	12	26	4.10
L cingulate gyrus	−4	4	30	3.67
Healthy controls > ARMS
No significant effect