Table 1.

Significant clusters that were activated in response to cooperation enforcement, fairness and reciprocity (cFWE, P < 0.01, and uncorrected cluster-defining, P < 0.001), and common regions activated in response to fairness and reciprocity

Brain regions	BA	MNI			Cluster size (mm3)	Extrema value
		x	y	z		(×10−2)
Cooperation
Caudate	–	12	12	−6	2784	3.55
Caudate	–	16	20	0		2.70
OFC	32	6	48	−14	1352	3.10
Fairness
Caudate	–	10	12	−10	1520	2.54
Caudate	–	−4	10	−10		1.98
OFC	10	4	54	−16	1104	1.75
OFC	32	4	40	−16		1.40
Reciprocity
Caudate	–	16	20	0	2432	2.47
Caudate	–	14	10	−4		2.24
LN/putamen	–	22	10	−12		1.74
Fairness ∩ reciprocity
Caudate	–	12	12	−6	200	1.71

Abbreviations: LN, lentiform nucleus.