Extended Data Table 1. Loci of fMRI activations.

Centres of ROIs reported in the main text may differ slightly from the coordinates above because ROIs were based on Z peaks after smoothing. Clusters for GLM3 were restricted to the frontal mask. Separate results using an objective and a subjective definition of value.

Value difference (GLM1)
area	x	y	z	max Z	P value
V2	-26.5	-33	1.5	4.54	3*10-6
dlPFC	11.5	2.5	17.5	4.66	3*10-6
V2	-6	-43.5	3	3.78	0.0004
OFC (13)	-9	14.5	4.5	4.53	0.0169
V2	25	-32.5	9.5	4.58	0.0222

Value difference novel vs familiar (GLM2)
area	x	y	z	max Z	P value
MFC	-0.5	25	8	4.14	3*10-7

Repetition suppression for identical stimuli (GLM3)
area	x	y	z	max Z	P value
OFC (11)	1.5	29	9.5	3.67	0.0277
dlPFC	-8.5	17	13	3.46	0.0417

Subjective value difference (GLM1 subj)
area	x	y	z	max Z	P value
dlPFC	12	2	17.5	5.16	1*10-13
V2	-26.5	-32.5	2	4.38	5*10-6
V2	25	-32.5	9.5	4.51	3*10-5
V2	-6.5	-43.5	3.5	3.67	0.0012
OFC (13)	-9	14.5	4	4.79	0.0113

Subjective value difference novel vs familiar (GLM2 subj)
area	x	y	z	max Z	P value
MFC	0	24.5	7.5	3.88	0.0028