Table 1. The regions of significant gray matter change in V2, V3, SC, and Acb regions correlated with performance score and rake distance moved, identified in group and individual analysis across marmosets.

	Regions						Individual Z scores
							Coordinates			Group		Subjects
		x	y	z	Cluster size	Z score						36	54	66	70
Performance	V3 right	9.8	−5.0	9.0	140	5.10	3.56*	N.S.	N.S.	3.45*
	V3 left	−9.4	−7.6	8.6	1289	5.79	N.S.	4.10*	5.23	3.30*
	V2 left	−8.4	−8.4	7.0	1289	6.21	3.32*	3.39 *	5.92	3.73*
	Acb right	0.5	11.5	9.0	132	5.05	3.30*	3.45*	N.S.	3.98*
	Acb left	−1.9	12.1	9.3	30	4.87	N.S.	5.06	N.S.	4.05*
	SC right	0.3	−0.7	10.9	1487	5.68	3.25*	4.64*	4.45*	4.57*
	SC left	−0.5	−0.5	10.9	1487	5.64	N.S.	N.S.	4.29*	4.51*
Distance Moved	Acb right	0.7	9.0	7.2	5287	6.24	N.S.	6.12	N.S.	5.01
	Acb left	−1.3	10.6	9.3	5287	5.83	3.56*	4.83	N.S.	5.04
	SC right	0.1	−0.9	10.9	1460	5.63	3.37*	4.69*	5.03	3.87*
	SC left	−0.5	−2.1	9.5	1460	5.02	3.46*	4.00*	4.01*	3.66*

Regions were first identified by using a statistical threshold of p < 0.05 after correction for multiple comparisons across the whole brain at the voxel level. The threshold were then lowered to p < 0.001 uncorrected (indicated by*) across the group. Coordinates and number of contiguous voxels (cluster size) at p < 0.05 (corrected) are reported across all four marmosets. N.S. indicates not significant even when the statistical threshold was lowered to p < 0.001 uncorrected.