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Spinal Trigeminal Nucleus

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This page covers biological details of component Spinal Trigeminal Nucleus. Region is part of aHuman target integrated biological model.

  • Top-down path to region: Hindbrain Myelencephalon -> Myelencephalic Sensory Nuclei (HL.SN) -> Trigeminal Sensory Nuclei (HL.TGS) -> Spinal Trigeminal Nucleus (LPC.HL.TGS.STR) (see Mind Maps)
  • Type: nucleus
  • Quality: L0
  • Brain area: Lower Brain - Peripheral Control Area (LPC)
  • Area circuit: Sensory Face (SF)
  • Role: sensory.nucleus
  • Function: Discriminative sensation and light touch of face, conscious proprioception
  • Notes to function:
    • Pontine Nuclei, part of cranial nerve nuclei, ear, similar to SG of spinal cord




Component items:

  • Trigeminal Caudal Nucleus (LPC.HL.TGS.CSTR)
  • Interpolar Part of Spinal Trigeminal Nucleus
  • Oral Part of Spinal Trigeminal Nucleus



Inbound Region Connections:

Source Area Source Region Source Name Type Role Reference
LPC LPC.HT.PN.PTR Principal Trigeminal Nucleus excitatory-glu uncertain Eye blink reflex and pupillary light reflex (PrincipalTrigeminal -> SpinalTrigeminal)
LPC.MM.MSTR Mesencephalic Trigeminal Nucleus excitatory-glu uncertain (unknown reference)
LPC.PN.SG.GNG Geniculate Ganglion excitatory-glu uncertain (unknown reference)
LPC.PN.SG.JUG Jugular Ganglion excitatory-glu uncertain (unknown reference)
LPC.PN.SG.PET Petrosal Ganglion excitatory-glu uncertain (unknown reference)
LPC.PN.SG.TRG Trigeminal Ganglion excitatory-glu uncertain (unknown reference)
LPC.PN.SG.UDRG Upper Dorsal Root Ganglion excitatory-glu uncertain (unknown reference)

Outbound Region Connections:

Target Area Target Region Target Name Type Role Reference
LLC LLC.HT.PRF.RTMG Pontine Reticulotegmental Nucleus excitatory-glu uncertain Eye blink reflex and pupillary light reflex (SpinalTrigeminal -> RF, abstract)
LPC LPC.MM.OCN Oculomotor Nucleus excitatory-glu uncertain Eye blink reflex and pupillary light reflex (SpinalTrigeminal -> Oculomotor)
LRC LRC.HL.PRF.GCR Gigantocellular Reticular Nucleus excitatory-glu uncertain (unknown reference)
LRC.MM.SC.INT Intermediate Superior Colliculus excitatory-glu uncertain (unknown reference)

Thirdparty Circuits


Abducens=Abducens Nucleus,LPC.HT.ABD
Ciliary=Ciliary Ganglion,LAC.PN.PSYM.CLG
EWN=Edinger-Westphal Nucleus,LAC.MM.EWN
Facial=Facial Motor Nucleus,LPC.HT.FCM
Oculomotor=Oculomotor Nucleus,LPC.MM.OCN
Pretectum=Pretectum,MM.PT (see Reflexes Nuclei of Midbrain Mesencephalon)
PrincipalTrigeminal=Principal Trigeminal Nucleus,LPC.HT.PN.PTR
RF=Pontine Reticular Formation,HT.RF
SpinalTrigeminal=Spinal Trigeminal Nucleus,LPC.HL.TGS.STR
SupraOculomotor=Supraoculomotor Area,VBA.MM.SOA (see Reflexes Nuclei of Midbrain Mesencephalon)
VAC=Associative Visual Cortex,NPE.NC.OCC.V3 (see Occipital Lobe)

CG=Ciliary Ganglion,LAC.PN.PSYM.CLG
EWN=Edinger-Westphal Nucleus,LAC.MM.EWN
LGN=Lateral Geniculate Nucleus,NSA.FD.LGN
OCN=Oculomotor Nucleus,LPC.MM.OCN
RT=Retinal Ganglion,LPC.PN.SG.RT
SOA=Supraoculomotor Area,VBA.MM.SOA (see Reflexes Nuclei of Midbrain Mesencephalon)
STN=Spinal Trigeminal Nucleus,LPC.HL.TGS.STR
VAC=Posterior Eye Field,NPE.NC.IPS.PEF (see Intraparietal Sulcus)
VC=Occipital Lobe,NC.LOBE.OCC

CSN=Principal Trigeminal Nucleus,LPC.HT.PN.PTR
STR=Spinal Trigeminal Nucleus,LPC.HL.TGS.STR
VPM=Ventral Posteromedial Nucleus,NCP.FD.TH.VPM