Table 2.

Positive linear relationship with memory strength:
Anatomical Area	~BA	Hemi.	x	y	z	Z Score	Size (mm3)
Precuneus / Posterior Cingulate	7/31	L	−12	−66	36	4.78	3186
Intraparietal sulcus / Inferior parietal lobule	7/39/40	L	−39	−54	45	4.5	4968
Cingulate cortex	23	L	−6	−24	27	4.1	1134
"			−6	−12	27	4.03
Middle Frontal Gyrus	9	L	−39	12	42	3.61	864
Inferior Frontal Gyrus	47	L	−42	48	−6	3.58	837
Inferior Frontal Gyrus	47	L	−33	21	−3	3.41	162

Decision uncertainty (inverted U-shaped pattern):
Anatomical Area	~BA	Hemi.	x	y	z	Z Score	Size (mm3)
Superior Parietal Lobe	7	R	15	−69	57	6.37	29322
Superior Parietal Lobe	7	L	−9	−72	57	5.74
Supramarginal Gyrus	40		−42	−39	42	5.71
Superior Frontal Sulcus	6/8	L	−24	0	57	6.29	26892
Superior Frontal Sulcus	6/8	R	27	6	54	6.23
"			18	6	60	5.91
Middle Frontal Gyrus	9/46	R	33	36	39	4.84	5967
"			42	39	24	4.02
"			42	42	15	3.84
Inferior Frontal Gyrus	6/44	R	54	9	21	4.83	2403
Parieto-Occipital Sulcus	18/19	R	21	−63	24	4.49	1404
Insula	-	R	36	15	9	4.31	1053
"		L	−33	18	9	4.1	864
Angular Gyrus	19/39	R	39	−78	33	3.94	2268
Precentral Gyrus	6	L	−51	0	33	3.76	837
Superior Frontal Sulcus	9	L	−30	39	36	3.68	459
Precentral Gyrus	4	R	3	−30	63	3.58	486
Parieto-Occipital Sulcus	18/19	L	−21	−63	24	3.28	189
Calcarine Sulcus	19	L	−21	−66	6	3.14	189

Decision certainty (U-shaped pattern):
Anatomical Area	~BA	Hemi.	x	y	z	Z Score	Size (mm3)
Cerebellum	-	R	3	−63	−15	5.38	21141
"			27	−45	−27	5.37
Cerebellum	-	L	−30	−45	−27	5.08
Angular Gyrus	39	L	−42	−72	39	5.05	9639
"			−39	−48	27	3.62
Postcentral Gyrus	2	L	−24	−39	63	4.89	61695
Superior Frontal Gyrus	6		−9	−12	57	4.76
Post/Precentral Gyrus	3/4		−33	−33	66	4.73
Middle/Superior Frontal
Gyrus	8/9	L	−33	24	57	4.24	2295
"			−21	33	51	3.48
"			−39	15	48	3.19
Postcentral Gyrus Postcentral	2	R	24	−45	72	4.16	1377
Gyrus/Supramarginal
Gyrus	2/40	R	54	−30	24	4	1620
"	"	L	−54	−33	24	3.67	351
Superior Frontal Gyrus	9/10	L	−12	57	27	3.58	459
Inferior Frontal Gyrus	6	R	48	0	9	3.51	189
Inferior Frontal Gyrus	47	L	−33	36	−9	3.45	297
Fusiform Gyrus	20/36	L	−36	−9	−27	3.41	135
Middle Temporal Gyrus	21/37	L	−63	−54	−3	3.31	162

PPI analysis: Functional coupling with SPL during uncertain decisions:
Anatomical Area	~BA	Hemi.	x	y	z	Z Score	Size (mm3)
Cerebellum	-	R	33	−48	−24	4.33	3105
Cerebellum	-		12	−69	−24	3.91
Inferior Occipital Gyrus	37	L	−45	−60	−12	3.86	2646
Fusiform Gyrus	37		−36	−54	−21	3.78
Inferior Occipital Gyrus	19	R	36	−84	−9	3.86	2349
Middle Occipital Gyrus	18		33	−93	0	3.85
Precentral Gyrus	6	L	−42	3	30	3.79	567
Middle Occipital Gyrus	18/19	L	−36	−87	−3	3.54	1242
"			−30	−90	−12	3.28
Precentral Gyrus/Anterior
Cingulate	6/32	R	12	9	51	3.46	162
Central Sulcus	3/4	L	−36	−30	69	3.41	702
"			−33	−21	69	3.39
White matter	-	L	−27	−78	6	3.4	135
Midbrain		L	−6	−18	−12	3.34	162

PPI analysis: Functional coupling with IPS during uncertain decisions:
Anatomical Area	~BA	Hemi.	x	y	z	Z Score	Size (mm3)
Fusiform Gyrus	37	L	−36	−60	−18	4.53	2673
"			−48	−69	−12	3.4
Cerebellum	-	R	12	−51	−12	4.4	7371
"			36	−51	−24	4.36
"			27	−57	−24	4.17
Precentral Gyrus	4/6	L	−36	−21	69	3.72	1512
Intraparietal Sulcus	7	L	−24	−66	48	3.51	324
Superior Frontal Sulcus	6	L	−30	0	63	3.44	675
"			−27	−3	54	3.37
Superior Frontal Gyrus	6	R	24	3	69	3.42	351
Inferior Occipital Gyrus	19	R	36	−81	−12	3.4	216
Superior Parietal Lobe	7	L	−12	−66	60	3.28	162