fronto-orbital sulcus

fronto-orbital sulcus (fros)

The term fronto-orbital sulcus refers to a superficial feature of the frontal lobe identified by dissection. Found in about half of human brains, it is a groove located low on the lateral surface of the lobe, where it parallels the ventral surface of the orbital gyri ( Ono-1990 ). In the macaques it is a short sloping groove embedded rostrally in the inferior frontal gyrus at its margin with the orbital gyri ( Martin-2000 ). Some macaques lack a sulcus but have an infraprincipal dimple between the principal sulcus and the lower margin of the frontal lobe at about the same anterior-posterior level. Equivalent structures to not appear in the smooth cerebral cortex of the rat or mouse.

Also known as: fronto-orbital sulcus, Sulcus fronto-orbitalis, orbito-frontal sulcus, Sulcus front-orbitalis

NeuroNames ID: 77

All Names & Sources

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Showing 7 synonym(s) - Use arrows to navigate

Showing 7 synonym(s)

Name:

fronto-orbital sulcus

Language:

English

Organism:

human

Source:

Ono-1990

Citation:

Atlas of the Cerebral Sulci, Thieme Medical Publishers, Inc., New York, 1990.

Source Title:

Atlas of the Cerebral Sulci

Name:

fronto-orbital sulcus

Language:

English

Organism:

Macaca fascicularis

Source:

Szabo-1984

Citation:

J Comp Neurol 1984 Jan 10;222(2):265-300

Source Title:

A stereotaxic atlas of the brain of the cynomolgus monkey (Macaca fascicularis)

Name:

Sulcus fronto-orbitalis

Language:

Latin

Organism:

human

Source:

Mai-1997

Citation:

San Diego: Academic Press, 1997

Source Title:

Atlas of the Human Brain

Name:

Sulcus fronto-orbitalis

Language:

Latin

Organism:

Papio ursinus

Source:

Cunningham-1892

Citation:

The Academy House, Dublin, 1892

Source Title:

Contribution to the Surface Anatomy of the Cerebral Hemispheres with a Chapter upon Cranio-Cerebral Topography

Name:

orbito-frontal sulcus

Language:

English

Organism:

Macaca mulatta

Source:

Bonin-1947

Citation:

University of Illinois Press, Urbana, Illinois, 1947

Source Title:

The Neocortex of Macaca Mulatta

Name:

fros

Language:

acronym

Organism:

macaque

Source:

Martin-1996

Citation:

Neuroimage 1996 Oct;4(2):119-50

Source Title:

A stereotaxic template atlas of the macaque brain for digital imaging and quantitative neuroanatomy

Name:

Sulcus front-orbitalis

Language:

Latin

Organism:

macaque

Source:

Bonin-1947

Citation:

University of Illinois Press, Urbana, Illinois, 1947

Source Title:

The Neocortex of Macaca Mulatta

Illustrations

Showing 2 illustration(s)

labeled line drawings of
sagittal section in
Macaca fascicularis

drawing of
all aspects in
macaque

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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Showing 4 record(s) - Use arrows to navigate

Showing 4 record(s)

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

fronto-orbital sulcus

Source:

Ono-1990

Basis:

Topology

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Sulcus fronto-orbitalis

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

Models Where It Appears

Structural CNS Model - Macaque

Brain structures of the macaque are illustrated in BrainInfo’s NeuroMaps macaque brain atlas. Structures are grouped by proximity in a hierarchy corresponding to the central nervous system hierarchy of NeuroNames ( Bowden-1995 Martin-2000 ). Structures in the NeuroMaps atlas are based on the segmentation of an MRI of the brain of a 3-year old male rhesus macaque (Macaca mulatta). The atlas is most useful for targeting structures for implantating electrodes and chemtrodes. Updated 29 Oct 2025.

brain

forebrain

endbrain

cerebral cortex (cortical plate)