BrainRegionLRC MM SC INT

Intermediate Superior Colliculus

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This page covers biological details of component Intermediate Superior Colliculus. 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) -> Superior Colliculus (MM.SC) -> Intermediate Superior Colliculus (LRC.MM.SC.INT) (see Mind Maps)
• Type: nucleus
• Brain area: Lower Brain - Motor Reflex Area
• Role: relay
• Function: Sensimotor integration for orienting
• Notes to function: Receive GABA from SNpr to gate integration

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Components

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Component items:

• Stratum Griseum Intermediale, Lamina IV (VBA.MM.SC.SGI)
• Stratum Album Intermediale, Lamina V (VBA.MM.SC.SAI)

Connectivity

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Inbound Region Connections:

Source Area	Source Region	Source Name	Type	Reference
FAM	FAM.HP.PPN.IPD	Interpeduncular Nucleus	modulatory-ach	Geniculate and Extyrageniculate Paths (PPN -> SC, abstract)
FEC	FEC.FT.SNR.VL	Substantia Nigra Pars Reticulata Ventrolateral	inhibitory-gaba	Saccadic Vision (BG -> SCi, abstract)
LLC	LLC.HP.CR.FN	Fastigual Nucleus	excitatory-glu	(unknown reference)
LPC	LPC.HM.CU	Cuneate Nucleus	excitatory-glu	(unknown reference)
	LPC.HM.GR	Gracile Nucleus	excitatory-glu	(unknown reference)
	LPC.HM.TGM.STR	Spinal Trigeminal Nucleus	excitatory-glu	(unknown reference)
LRC	LRC.MM.EIC	External Nucleus of Inferior Colliculus	excitatory-glu	Five Parallel Auditory Pathways (ICx -> SC, abstract)
	LRC.MM.SC.SUP	Superficial Superior Colliculus	excitatory-glu	Global visual system (SCs -> SCi, abstract)
NMA	NMA.NC.PMC.AFEF	Anterior Frontal Eye Field	excitatory-glu	Summary of eye movement control (FEF -> SC, abstract)

Outbound Region Connections:

Target Area	Target Region	Target Name	Type	Reference
FEC	FEC.FD.TH.LI	Limitans Nucleus of Thalamus	excitatory-glu	Saccadic Vision (SCi -> Thalamus, abstract)
LRC	LRC.MM.SC.DEEP	Deep Superior Colliculus	excitatory-glu	Global visual system (SCs -> SCi, abstract)
NMA	NMA.FD.TH.VA	Ventral Anterior Nucleus	excitatory-glu	Saccadic Vision (SCi -> Thalamus, abstract)
NSA	NSA.FD.TH.SG	Suprageniculate Nucleus of Thalamus	excitatory-glu	Saccadic Vision (SCi -> Thalamus, abstract)

Thirdparty Circuits

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• no circuits defined

References

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• no references defined