Appendix II: equation parameters

• Appendix I: model parameters

Posterior Cortex (x) – Equation (19)
Variable	Variable Symbol	Value
Decay Rate	A^x	30
Excitatory saturation point	B^x	100
Reset signal	res	17

Anterior Cortex (y) – Equation (20, 21,22)
Variable	Variable Symbol	Value
Decay Rate	A^y	20
Excitatory saturation point	B^y	5
DA parameter	F1	12
DA parameter	F2	10^3
DA parameter	n	1.2
Level of tonic DA	VTA^tonic	0.8
DA parameter		100
Reset signal	res	17

LTM weights xÞ y (w^c) – Equation (23)
Variable	Variable Symbol	Value
Excitatory saturation point		1
Learning rate	h1	10
Learning rate	h2	200
Learning rate	h5	0.5

Ventral Tegmental Area (VTA) – Equation (26)
Variable	Variable Symbol	Value
Decay Rate	A^VTA	5
Excitatory saturation point	B^VTA	10
Reset signal	reset^VTA	11

LTM weights yÞ VTA (w^y,VTA) – Equation (27)
Variable	Variable Symbol	Value
l	l	1
Learning rate	h3	10
Learning rate	h4	0.2

HIPPOCAMPUS: inhibitory DA interneuron (l) – Equation (29)
Variable	Variable Symbol	Value
Hippocampus constant		0.5
Hippocampus constant	n	2

Nucleus Accumbens (NAC) – Equation (38,39)
Variable	Variable Symbol	Value
NAc Constant		1
NAc Constant		10
NAc Constant	n	3

HIPPOCAMPUS: excitatory DA interneuron – Now-Print (N) – Equation (32,33,34,35)
Variable	Variable Symbol	Value
Hippocampus constant	n	8

HIPPOCAMPUS: Entorhinal cortex (EC) – Equation (30)
Variable	Variable Symbol	Value
Excitatory saturation point	A^EC	1
EC constant	k	100
Reset signal	res	17

HIPPOCAMPUS: LTM Entorhinal cortex (w^EC) – Equation (31)
Variable	Variable Symbol	Value
Excitatory saturation point	B^wEC	1

HIPPOCAMPUS: Dentate Gyrus (DG) – Equation (32)
Variable	Variable Symbol	Value
Decay rate	A^DG	0
Excitatory saturation point	B^DG	1
Dentate activation rate		0.00001:0.01 :0.2
Dentate constant	k	10

HIPPOCAMPUS: Dentate Gyrus neurotransmitter (n^DG) – Equation (33)
Variable	Variable Symbol	Value
Excitatory saturation point	B^nDG	1
Dentate constant		0.001
Dentate constant	n	2

HIPPOCAMPUS: LTM Dentate Gyrus Þ CA3 (w^DG,CA3) – Equation (34)
Variable	Variable Symbol	Value
Excitatory saturation point	B^nDG	1
LTM constant		0.001
LTM constant	n	2
LTM constant		10^3

HIPPOCAMPUS: CA3 (CA3) – Equation (35)
Variable	Variable Symbol	Value
CA3 constant	n	2

HIPPOCAMPUS: CA3 LTM weights (w^CA3) – Equation (36)
Variable	Variable Symbol	Value
Excitatory saturation point		1
LTM constant		1