Inferred network

R(Retina) → SCH(Suprachiasmatic nucleus)
SCH(Suprachiasmatic nucleus) → PVT(Paraventricular nucleus of the thalamus)
PVT(Paraventricular nucleus of the thalamus) → PMd(Dorsal premammillary nucleus)
PMd(Dorsal premammillary nucleus) → LHA(Lateral hypothalamic area)

Support information about direct projections from Retina to Suprachiasmatic nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
RetinaSuprachiasmatic nucleus strongnot knownCholera toxin conjugated to HRP
Case pg307-308, fig12. Soma notes 2 adult male hooded rats and 5 adult male albino rats were used. each received an injection of CT-HRP into the posterior chamber of the eye.. Terminal notes retinohypothalamic tract 3 components: 1) largest is innervation of SCN. Rostral SCN: a very dense band of terminals at border of SCN and optic chiasm, Mid SCN: most of ven.lat. component of nuc filled with dense terminal plexus, remainder less dense.
Johnson RF, Morin LP, Moore RY., 1988
RetinaSuprachiasmatic nucleus strongnot knownCholera toxin conjugated to HRP
Case pg348,349-50, fi3,6. 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 RHTa) inbtwn 2 SCNs under v3, b) ven. lat. to SCN, appear to cradle it high density of terminal labeling in and around SCN. (ven.lat. parts of ros. SCN, venlat. dorlat. parts of cau. SCN.) dormed. subncl of SCN largely spared..
Levine JD, Weiss ML, Rosenwasser AM, Miselis RR., 1991
RetinaSuprachiasmatic nucleus moderate/strongnot knownautoradiography
Case pg3, fig1. Soma notes 30 animals used for autoradiography study. Each received 1 injection of either L-leucine-3H or L-proline-3H into the posterior chamber of one eye. Terminal notes The autoradiographic material provided substantial evidence for a retinohypothalamic tract. The hypothalamic nuclei themselves were free of labelling save for the suprachiasmatic nucleus, both ipsi and contra, especially in ventral 1/2.
Moore RY, Lenn NJ., 1972

Support information about direct projections from Suprachiasmatic nucleus to Paraventricular nucleus of the thalamus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Suprachiasmatic nucleusParaventricular nucleus of the thalamus moderatenot knownfluorescent tracers
Case pg237, fig6,7. Soma notes Both these expts (E30 & E33) produced heavy retrograde labeling in the region of the SCh.. Terminal notes Expt E33 involved a smaller liquid injection (than E30) in the paraventricular nucleus of the thalamus.
Watts AG, Swanson LW., 1987
Suprachiasmatic nucleusParaventricular nucleus of the thalamus moderatenot knownPHAL
Case pg208,211, fig3H-N. Soma notes 3 PHA-L injs were virtually limited to the SCh, with less than 5% of labeled neurons outside boundaries of nucleus itself. Injs A7 & A54 tended to label cells in ventral part of nucleus, while inj A25 extended more dorsally. Terminal notes 3rd Pway. pathway courses ventrally to innervate the preoptic continuation of the bed nucelus as well as parataenial & paraventricular nuc of thalamus. In PT & PVT fibres are thin, widely spaced small varicosities and give rise to many terminal boutons..
Watts AG, Swanson LW, Sanchez-Watts G., 1987
Suprachiasmatic nucleusParaventricular nucleus of the thalamus lightnot knownPHAL
Case pg208,212, fig3I-Q. Soma notes 3 PHA-L injs were virtually limited to the SCh, with less than 5% of labeled neurons outside boundaries of nucleus itself. Injs A7 & A54 tended to label cells in ventral part of nucleus, while inj A25 extended more dorsally. Terminal notes 5th Pway. Many fibres from PVH appear to continue dorsally through midline thalamic nuclei ( reuniens, rhomboid & central medial) to end in more caudal parts of the PVT. Some branching/terminal boutons seen in PVT, much less freq in RE & RH..
Watts AG, Swanson LW, Sanchez-Watts G., 1987
Suprachiasmatic nucleusParaventricular nucleus of the thalamus existsnot knownPHAL
ipsilateral, earlier: Berk & Finkelstein Brain Res. 226:1-13, 1981, rat, autoradiography
Watts AG, Swanson LW, Sanchez-Watts G., 1987

Support information about direct projections from Paraventricular nucleus of the thalamus to Dorsal premammillary nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Paraventricular nucleus of the thalamusDorsal premammillary nucleus lightnot knownCTB
A few retrogradely labeled cells were found in the dorsal and ventral thalamus, in which scattered marked neurons were observed consistently in the rostral part of the paraventricular nucleus (Fig. 3E), parataenial nucleus (Fig. 3E), peripeduncular nucleus (Fig. 3M), and rostral pole of the zona incerta (Fig. 3H–J).
Comoli E., Ribeiro-Barbosa E.R. & Canteras N.S., 2000

Support information about direct projections from Dorsal premammillary nucleus to Lateral hypothalamic area:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Dorsal premammillary nucleusLateral hypothalamic area existsnot knownPHAL
perifornical
Canteras N.S., Swanson L.W., 1992