Inferred network

R(Retina) → MPN(Medial preoptic nucleus)
MPN(Medial preoptic nucleus) → MRN(Mesencephalic reticular nucleus)
MRN(Mesencephalic reticular nucleus) → ACB(Nucleus accumbens)
ACB(Nucleus accumbens) → LHA(Lateral hypothalamic area)

Support information about direct projections from Retina to Medial preoptic nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
RetinaMedial preoptic nucleus light/moderatenot knownCholera toxin conjugated to HRP
Case pg348,349, fig5a-f. Soma notes 36 female Sprague-Dawley rats weighing 200-350g. 10 microliters of CT-HRP(.20%-.40%) were injected into one eye ?behind the lens into the vitreous chamber of the eye. pressure injection over 1 min. Terminal notes Medial component of the RHT included labeled fibres and terminals found near the midline involved the medial half of the medial preoptic area terminals evident in the ventral part of the medial preoptic nucleus.
Levine JD, Weiss ML, Rosenwasser AM, Miselis RR., 1991

Support information about direct projections from Medial preoptic nucleus to Mesencephalic reticular nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Medial preoptic nucleusMesencephalic reticular nucleus existsnot knownPHAL
caudolaterodorsal. Collator note: repeats not included from Swanson, Mogenson, Gerfen, & Robinson Brain Res. 295:161-178, 1984.
Swanson L.W., Mogenson G.J., Simerly R.B., Wu M., 1987

Support information about direct projections from Mesencephalic reticular nucleus to Nucleus accumbens:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Mesencephalic reticular nucleusNucleus accumbens light/moderatenot knownFluorogold
Collator note: some label in what appears to be the caudalmost MRN, medially, and possibly extening into PPN. See Fig. 12D, page 271, Swanson Atlas Levels 42-44.
Brog J.S., Salyapongse A., Deutch A.Y. & Zahm D.S., 1993

Support information about direct projections from Nucleus accumbens to Lateral hypothalamic area:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Nucleus accumbensLateral hypothalamic area existsnot knownPHAL
central region, at the level of the AHN; earlier: see Mogenson et al. J. Neurosci. 3:189, 1983, rat, autoradiography and electrophysiology. Collator note: predominantly from the shell region of ACB.
Risold P.Y., Thompson R.H., Swanson L.W., 1997
Nucleus accumbensLateral hypothalamic area existsnot knownautoradiography/electrophysiology
at about atlas level 27
Mogenson GJ, Swanson LW, Wu M., 1983
Nucleus accumbensLateral hypothalamic area strongnot knownautoradiography
Collator note: strong terminal field in the lateral LHA, between the fornix and the cerebral peduncle. See Fig. 1D-E, Swanson Atlas Levels 28-31.
Nauta W.J., Smith G.P., Faull R.L. & Domesick V.B., 1978