paraterminal gyrus

paraterminal gyrus (PTG)

The term paraterminal gyrus refers to a rostral part of the limbic lobe as defined topologically by dissection in the human ( Carpenter-1983 ). It is located rostral to the lamina terminalis, ventral to the subcallosal gyrus, dorsal to the straight gyrus and caudal to the anterior cingulate gyrus. The paraterminall gyrus is not found in the macaque where the topologically comparable area is classified as part of the the anterior cingulate gyrus ( Martin-2000 ), Nor is it found in the smooth cerebral cortex of the rat and mouse, which do not have sulcal landmarks ( Swanson-2004 Franklin-2008 ). Updated 11 Jun 2024.

Also known as: Hippocampus precommissuralis, paraterminal gyrus, Gyrus paraterminalis, Gyrus subcallosus, Hippocampus praecommissuralis, precommissural hippocampus, paraterminal body (Noback), peduncle of the corpus callosum

NeuroNames ID: 171

All Names & Sources

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English

paraterminal body (Noback)

Noback-1975

English

paraterminal gyrus

Carpenter-1983

English

paraterminal gyrus

Martin-1997

English

paraterminal gyrus

Ono-1990

English

peduncle of the corpus callosum

Wikipedia-2024a

English

precommissural hippocampus

Zilles-1990

Illustrations

Showing 2 illustration(s)

drawing of
medial aspect in
human

labeled line drawings of
sagittal section in
Macaca fascicularis

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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Basis

Has Equivalent

Organism

Their Name

Source

Topology

Yes

Homo sapiens (human)

Gyrus paraterminalis

Nomina-1983

Topology

Yes

Homo sapiens (human)

Gyrus subcallosus

Riley-1943

Topology

Yes

Homo sapiens (human)

Hippocampus praecommissuralis

Stephan-1976

Topology

Yes

Homo sapiens (human)

Hippocampus precommissuralis

Schiebler-1999

Topology

Yes

Homo sapiens (human)

paraterminal body (Noback)

Noback-1975

Topology

Yes

Homo sapiens (human)

paraterminal gyrus

Carpenter-1983

Topology

Yes

Homo sapiens (human)

paraterminal gyrus

Ono-1990

Topology

Yes

Homo sapiens (human)

peduncle of the corpus callosum

Wikipedia-2024a

Topology

Yes

Homo sapiens (human)

precommissural hippocampus

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)