principal sulcus - BrainInfo

principal sulcus (prs)

The term principal sulcus refers to a superficial feature of the frontal lobe of the macaque. Located on the dorsolateral surface, it is a horizontal groove extending toward the frontal pole from the angle of the arcuate sulcus ( Krieg-1975; Walker-1940 ). The adult human brain has no feature topologically equivalent to it ( Matelli-2004 ). While the human-fetal-brain.htm" TARGET="_BLANK">fetal cortex of the 32-33 week human has such a feature, it is more likely homologous to the inferior frontal sulcus of the adult human ( Savel'ev-2005 ). It is not present in the smooth cerebral cortex of the rat or the mouse ( NeuroNames ).

Also known as: sulcus rectus (Walker), principal sulcus (macaque), Sulcus principalis, rectus sulcus, Sulcus frontalis, inferior frontal sulcus (Walker), Sulcus frontalis principalis

NeuroNames ID: 66

All Names & Sources

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Showing 10 synonym(s) - Use arrows to navigate

Showing 10 synonym(s)

Name:

solco principale

Language:

Italian

Organism:

macaque

Source:

Carpenter-1995

Citation:

EdiSes, s.r.l.- Napoli, 1995

Source Title:

Fondamenti di Neuroanatomia

Name:

sulcus rectus (Walker)

Language:

Latin

Organism:

macaque

Source:

Walker-1940

Citation:

Journal of Comparative Neurology, 73:59-86, 1940

Source Title:

A cytoarchitectural study of the prefrontal area of the macaque monkey

Name:

principal sulcus (macaque)

Language:

English

Organism:

Macaca mulatta

Source:

Krieg-1975

Citation:

Brain Books, Evanston, Illinois, 1975

Source Title:

Interpretive Atlas Of The Monkey's Brain

Name:

Sulcus principalis

Language:

Latin

Organism:

Macaca mulatta

Source:

Sugar-1950

Citation:

Source Title:

Corticocortical connections of the cortex buried in the intraparietal and principal sulci of the monkey (Macaca mulatta)

Name:

rectus 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 frontalis

Language:

Latin

Organism:

Macaca mulatta

Source:

Clarke-1920

Citation:

Part II in Investigation of the Central Nervous System, The Johns Hopkins Hospital Reports (special volume), Baltimore, The Johns Hopkins Press, 1920

Source Title:

Atlas of photographs of frontal sections of the cranium and brain of the rhesus monkey (Macacus Rhesus)

Name:

inferior frontal sulcus (Walker)

Language:

English

Organism:

macaque

Source:

Walker-1940

Citation:

Journal of Comparative Neurology, 73:59-86, 1940

Source Title:

A cytoarchitectural study of the prefrontal area of the macaque monkey

Name:

Sulcus frontalis principalis

Language:

Latin

Organism:

guenon

Source:

Mauss-1908

Citation:

Journal für Psychologie und Neurologie, 13:263-325, 1908

Source Title:

Die faserarchitektonische Gliederung der Grosshirnrinde bei den niederen Affen

Name:

prs

Language:

acronym

Organism:

macaque

Source:

Martin-2000

Citation:

Elsevier, Amsterdam, 2000

Source Title:

Primate Brain Maps: Structure Of The Macaque Brain

Name:

Language:

acronym

Organism:

Macaca mulatta

Source:

Paxinos-2009a

Citation:

Amsterdam: Elsevier-Academic Press. 2009

Source Title:

The Rhesus Monkey Brain, Second Edition

Illustrations

Showing 4 illustration(s)

drawing of
all aspects in
human

labeled line drawings of
sagittal section in
Macaca fascicularis

surface view of
all aspects in
macaque

drawing of
all aspects in
macaque

Species With The Structure

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

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Showing 3 record(s)

Basis:

Topology

Has Equivalent:

Organism:

Homo sapiens (human)

Their Name:

---

Source:

NeuroNames

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)