Table 2.

Frontostriatal functional activation clusters showing group differences in voxel-wise analyses for the social prediction error task.

Region		Voxel Count	mm3	Z (max)	MNI Space
					X	Y	Z
Signed Prediction Error (SPE) contrast
ASD < TD
	RH Precentral Gyrus	109	872	4.26	18	-18	78
ASD > TD
	RH Frontal Pole	52	416	3.47	26	58	10
Thresholded Unsigned Prediction Error (tUPE) contrast
ASD < TD
	----	----	----	----	----	----	----
ASD > TD
	RH Anterior Cingulate Gyrus	215	1720	3.78	6	-4	46
	RH Precentral Gyrus	80	640	3.39	26	-20	70
	LH Precentral Gyrus	74	592	3.59	-24	-26	70
Main Effect of Reward contrast
ASD < TD
	----	----	----	----	----	----	----
ASD > TD
	RH Precentral Gyrus	70	560	3.46	26	-22	76

Note. Regions identified using the Harvard-Oxford Cortical and Subcortical Structural Atlases; RH = right hemisphere; LH = left hemisphere. No regions of activation were identified for the nonsocial RPE task.