BrainRegionLRC MM PT PR

Principal Pretectal Nucleus

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

• Top-down path to region: Midbrain Mesencephalon -> Reflexes Nuclei of Midbrain Mesencephalon (MM.REF) -> Visual Reflexes Nuclei of Midbrain Mesencephalon (MM.REF.VIS) -> Pretectum (MM.PT) -> Principal Pretectal Nucleus (LRC.MM.PT.PR) (see Mind Maps)
• Type: nucleus
• Quality: L0
• Brain area: Lower Brain - Motor Reflex Area (LRC)
• Area circuit: Postural Control Reflexes (LRP)
• Role: processor.automatic
• Function: Pupillary light reflex
• Comments: Medial pretectal nucleus
• Notes to function:
  • Affected by visual cortex and projects to EWN

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Components

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• no child items defined

Connectivity

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Inbound Region Connections:

Source Area	Source Region	Source Name	Type	Reference
LRC	LRC.HT.CR.FG	Fastigual Nucleus	excitatory-glu	(unknown reference)

Outbound Region Connections:

Target Area	Target Region	Target Name	Type	Reference
LAC	LAC.MM.EWN	Edinger-Westphal Nucleus	excitatory-glu	Eye blink reflex and pupillary light reflex (Pretectum -> EWN, abstract)

Thirdparty Circuits

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• Eye blink reflex and pupillary light reflex - see Reference (CP.SACCADIC-MOTOR-CONTROL)

Abducens=Abducens Nucleus,LPC.HT.ABD
Ciliary=Ciliary Ganglion,LAC.PN.PSYM.CLG
EWN=Edinger-Westphal Nucleus,LAC.MM.EWN
EYE=Eye,TARGET.TSA.EYE
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)

References

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• http://neuroscience.uth.tmc.edu/s3/chapter07.html