Table 1. Study 1, parametric analysis of regret: conjunction IP and OP conditions.

H	Anatomical region (BA)	MNI			Z-score
		x	y	z
	IP ( minus IF) and OP ( minus OF)
L	vmPFC (11)	−14	46	−14	3.62
L	Anterior cingulate cortex (24/32)	−8	38	12	3.31
R	Anterior cingulate cortex (24/32)	2	38	12	3.32
L	SMA (6)	0	−8	58	3.28
L/R	SMA (6)	4	−14	52	3.39
R	Middle cingulate cortex (6)	−4	−6	48	3.34
R	Middle temporal gyrus (21)	58	−10	−18	3.40
L	Amygdala	−14	−2	−18	3.26
L	Temporal pole (38)	−28	4	−20	3.47
	Amygdala	−24	0	−20	3.32
L	Hippocampus	−32	−34	−12	3.61
R	Hippocampus	32	−10	−32	3.53

Activations linearly and positively related to the objective amount of regret (measured as the difference between the actual outcome and the outcome of the unchosen gamble) in both the IP (minus IF) and OP (minus OF) conditions in study 1 (p<0.001 uncorrected). H = Hemisphere, L = Left, R = Right, BA = estimated Brodmann Area, vmPFC = ventromedial Prefrontal Cortex, SMA = Supplementary Motor Area.