collateral sulcus - BrainInfo

collateral sulcus (cos)

The term collateral sulcus (cos) refers to a cleft on the mesial aspect of the cerebral hemisphere that separates the lingual gyrus (LNG) of the occipital lobe (OLB) from the fusiform gyrus (FUG) of the temporal lobe (TLB) . Identified by dissection, it is found in the human ( Carpenter-1983 ) and the macaque ( Martin-2000 ). Equivalent structures are not found in the smooth cerebral cortex of the rat or mouse ( NeuroNames ). Updated 22 Aug 2024.

Also known as: collateral sulcus, Sulcus collateralis, collateral fissure

NeuroNames ID: 47

All Names & Sources

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English

collateral fissure

Carpenter-1983

English

collateral sulcus

Krieg-1975

English

collateral sulcus

Ono-1990

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	Has The Structure	Does Not Have The Structure	Does Not Have The Structure

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Basis

Has Equivalent

Organism

Their Name

Source

Topology

Yes

Homo sapiens (human)

collateral fissure

Carpenter-1983

Topology

Yes

Homo sapiens (human)

collateral sulcus

Carpenter-1983

Topology

Yes

Homo sapiens (human)

Sulcus collateralis

Nomina-1983

Topology

Yes

Macaca mulatta (Macaca mulatta)

collateral sulcus

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.