Table 2.

Regions of significant activation specific to cooperation and to competition (k > 50)

Region	Voxel coordinates			z Score
	x	y	z
Cooperation versus competition
L superior parietal cortex	−18	−46	70	4.25
L posterior cingulate	−4	−4	52	4.50
R posterior cingulate	6	−20	48	4.54
L/R posterior cingulate	0	−56	36	4.33
R posterior cingulate	6	−50	24	4.31
L insula	−44	−2	14	4.20
R insula	32	−4	4	4.38
R anterior frontal cortex	10	58	4	4.73
L medial orbitofrontal cortex	−12	36	− 12	4.98
Competition versus cooperation
R superior frontal gyrus	20	10	70	4.17
R inferior parietal lobulea	52	−48	46	3.11
R/L medial frontal gyrus	−2	36	40	5.27
L inferior parietal cortex	−42	−58	40	4.14
R superior frontal gyrus	28	60	22	3.97

^aDoes not reach the voxel extent threshold.