olfactory sulcus - BrainInfo

olfactory sulcus (olfs)

The term olfactory sulcus refers to a superficial feature of the frontal lobe. Defined by dissection it is a deep groove on the ventral surface that overlies the main olfactory bulb and and olfactory tract. It separates the straight gyrus on the medial margin of the lobe from the medial orbital gyrus. It is found in the human ( Mai-1997 ) and the macaque ( Martin-2000 ). An equivalent structure does not appear in the smooth cerebral cortex of the rat or mouse ( NeuroNames ).

Also known as: olfactory sulcus, Sulcus olfactorius

NeuroNames ID: 78

All Names & Sources

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English

olfactory sulcus

Carpenter-1983

English

olfactory sulcus

Krieg-1975

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	Relevant Data Not Located	Relevant Data Not Located

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Basis

Has Equivalent

Organism

Their Name

Source

Topology

Yes

Homo sapiens (human)

olfactory sulcus

Carpenter-1983

Topology

Yes

Homo sapiens (human)

Sulcus olfactorius

Nomina-1983

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)