BrainCenterNSA NC IPS

Intraparietal Sulcus

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This page covers biological details of component group Intraparietal Sulcus. Component group is part of aHuman target integrated biological model.

• Top-down path to center: Cerebral Cortex -> Parietal Lobe (NC.LOBE.PAR) -> Intraparietal Sulcus (NSA.NC.IPS) (see Mind Maps)
• Function: Perceptual-motor coordination and visual attention, eye movements and reaching
• Notes to function: PG, Control of saccadic eye movements, visual control of grasping

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Components

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Component items:

• Posterior Eye Field (NPE.NC.IPS.PEF): Reflexive saccade triggering
  • Medial Intraparietal Sulcus (NPE.NC.IPS.MIP): Encode location of reach target in nose-centered coordinates
  • Lateral Intraparietal Sulcus (NPE.NC.IPS.LIP): Representing saliency of spatial locations, and attention to locations
• Ventral Intraparietal Sulcus (NSA.NC.IPS.VIP): Merge visual, somatosensory, auditory, and vestibular senses
• Anterior Intraparietal Sulcus (NSA.NC.IPS.AIP): Represent shape, size, and orientation of objects to be grasped

Connectivity

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Internal Regions Connections:

Source Region	Target Region	Reference
Lateral Intraparietal Sulcus (NPE.NC.IPS.LIP)	Anterior Intraparietal Sulcus (NSA.NC.IPS.AIP)	Primate Control of Grasping (PIP -> AIP, abstract)

External Connections:

External Inbound Center Connections:

Source Center	Sample Link	Reference
Occipital Lobe (NC.LOBE.OCC)	NSA.NC.OCC.MT -> NPE.NC.IPS.LIP	Paths from Retina to Parietal Cortex and IT (MT -> LIP)
Medial Parietal Lobule (NC.MPL)	NCP.NC.MPL.PSCG -> NPE.NC.IPS.LIP	Oculomotor decision-making (CGp -> LIP)
Inferotemporal Area (NSA.NC.IT)	NSA.NC.IT.TEO -> NPE.NC.IPS.MIP	3 Visual Cortex Paths (IT -> IPS, abstract)

External Outbound Center Connections:

Target Center	Sample Link	Reference
Reflexes Nuclei of Midbrain Mesencephalon (MM.REF)	NPE.NC.IPS.LIP -> LRC.MM.CJ	Vision Components (VAC -> SOA, abstract)
Lateral Prefrontal Cortex (NC.AL.LPFC)	NPE.NC.IPS.LIP -> NDM.NC.AL.DLPFCR	Summary of eye movement control (PEF -> DLPFC, abstract)
Inferior Parietal Lobule (NC.IPL)	NSA.NC.IPS.VIP -> NPE.NC.IPL.SMW	3 Visual Cortex Paths (IPS -> IPL, abstract)
Medial Parietal Lobule (NC.MPL)	NPE.NC.IPS.MIP -> NCP.NC.MPL.PSCG	(unknown reference)
Premotor Cortex (NC.PMC)	NPE.NC.IPS.LIP -> NMA.NC.PMC.CFEF	Summary of eye movement control (PEF -> FEF, abstract)
Superior Parietal Lobule (NC.SPL)	NPE.NC.IPS.LIP -> NPE.NC.SPL.PG	Paths from Retina to Parietal Cortex and IT (LIP -> 7a)