posterior orbital gyrus

posterior orbital gyrus (ORGp)

The term posterior orbital gyrus ORGp) refers to one of four orbital gyri (ORG) on the ventral surface of the frontal lobe (FLB) in the human and the macaque.. Identified in the human by dissection and histology, it is located between the medial orbital sulcus (mos) and the lateral orbital sulcus (los). It is separated from the anterior orbital gyrus (ORGa) by the, transverse orbital sulcus (tos) ( Mai-1997 ). Together, the ORGa and ORGp constitute the intermediate orbital gyrus (ORGi). Histologically it is area 13l in the human ( Ongur-2003 ), The topological equivalent in the macaque is the caudal part of the ORGi, and the histological equivalent is largely area13m ( Carmichael-1994 ), dysgranular cortex ( Mesulam-1985 ). Thus, while the macaque has no tos separating it topologically from the ORGp ( Martin-2000 it differs in histology similarly to the human ( Carmichae-1994 Ongur 2003 ). Equivalent features are not found in the smooth cerebral cortex (CTX) of the rat or mouse ( Preuss-2022 ). Updated 5 Sep 2024.

Also known as: Gyrus orbitalis posterior, posterior orbital gyrus

NeuroNames ID: 6

All Names & Sources

1 of 5

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Name:

Gyrus orbitalis posterior

Language:

Latin

Organism:

human

Source:

Mai-1997

Citation:

San Diego: Academic Press, 1997

Source Title:

Atlas of the Human Brain

Name:

POrG

Language:

acronym

Organism:

human

Source:

Mai-1997

Citation:

San Diego: Academic Press, 1997

Source Title:

Atlas of the Human Brain

Name:

gyrus orbitaire postérieur

Language:

French

Organism:

human

Source:

Duvernoy-1992

Citation:

Springer-Verlag, Paris, 1992

Source Title:

Le cerveau humain: Surface, coupes seriees tridimensionnelles et IRM

Name:

posterior orbital gyrus

Language:

English

Organism:

human

Source:

Mai-1997

Citation:

San Diego: Academic Press, 1997

Source Title:

Atlas of the Human Brain

Name:

ORGp

Language:

acronym

Organism:

human

Source:

NeuroNames

Citation:

University of Washington, Seattle, WA

Source Title:

NeuroNames

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Species With The Structure

Equivalent By	Human	Macaque	Rat	Mouse
Topology	Has The Structure	Relevant Data Not Located	Does Not Have The Structure	Does Not Have The Structure

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Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Gyrus orbitalis posterior

Source:

Mai-1997

Basis:

Topology

Has Equivalent:

Organism:

Rattus (rat)

Their Name:

---

Source:

NeuroNames

Basis:

Topology

Has Equivalent:

Organism:

Mus (mouse)

Their Name:

---

Source:

NeuroNames

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No models available for this concept.