superior limb of the arcuate sulcus

superior limb of the arcuate sulcus (slas)

The term superior limb of the arcuate sulcus refers to the upper, horizontal branch of the arcuate sulcus in the frontal lobe of the macaque. Defined by dissection, it separates the superior frontal gyrus from the middle frontal gyrus ( Martin-2000 ). It may be homologous to the superior frontal sulcus and superior precentral sulcus of the adult human. (See arcuate sulcus for details.) Equivalent structures are not found in the smooth cerebral cortex of the rat or mouse ( NeuroNames ).

Also known as: Ramus superior sulcus arcuatus, horizontal arcuate sulcus, horizontal ramus of arcuate sulcus, superior arcuate sulcus, superior ramus of the arcuate sulcus, superior limb of the arcuate sulcus

NeuroNames ID: 64

All Names & Sources

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English

horizontal arcuate sulcus

Krieg-1975

English

horizontal ramus of arcuate sulcus

Walker-1940

English

superior arcuate sulcus

Matelli-2004

English

superior limb of the arcuate sulcus

Matelli-2004

English

superior ramus of the arcuate sulcus

Szabo-1984

Illustrations

Showing 3 illustration(s)

drawing of
all aspects in
human

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	Relevant Data Not Located	Relevant Data Not Located	Does Not Have The Structure	Does Not Have The Structure

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Basis

Has Equivalent

Organism

Their Name

Source

Topology

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Topology

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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

cerebrum (endbrain)

cerebral cortex (cortical plate)