Inferred network

R(Retina) → MPN(Medial preoptic nucleus)
MPN(Medial preoptic nucleus) → SI(Substantia innominata)
SI(Substantia innominata) → SNc(Substantia nigra compact part)
SNc(Substantia nigra compact part) → 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 Substantia innominata:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Medial preoptic nucleusSubstantia innominata lightnot knownHRP/WGA
Case table1. Soma notes ventral pallidum. Terminal notes WGA-HRP inj.
 Chiba T, Murata Y., 1985
Medial preoptic nucleusSubstantia innominata lightnot knownHRP/WGA
Case table1. Soma notes WGA-HRP inj. Terminal notes ventral pallidum.
 Chiba T, Murata Y., 1985

Support information about direct projections from Substantia innominata to Substantia nigra compact part:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Substantia innominataSubstantia nigra compact part moderatenot knownPHAL
Case pg350, fig1. Soma notes PHA-L inj centred in dorsal SI, but intruded into ventral SI. Terminal notes not specified..
 Grove EA., 1988
Substantia innominataSubstantia nigra compact part existsnot knownPHAL
none provided
 Swanson L.W., Mogenson G.J., Gerfen C.R., Robinson, 1984

Support information about direct projections from Substantia nigra compact part to Lateral hypothalamic area:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Substantia nigra compact partLateral hypothalamic area existsnot knownautoradiography
Case pg200, fig4. Soma notes 3H A.A. inj into medial part, slight involvement of SNr/VTA. Terminal notes not specified..
 Beckstead RM, Domesick VB, Nauta WJ., 1979