hilus of the dentate gyrus

hilus of the dentate gyrus (HDG)

The term hilus of the dentate gyrus refers to one of two parts of the dentate gyrus identified by topology in the human ( Insausti-2012 ) and macaque ( Paxinos-2009a ). It is the stem of the dentate gyrus, whicht attaches it to the CA fields in the functionally defined hippocampal complex. The body of the gyrus is the fascia dentata. The hilus is commonly referred to by the name of its domininant cell group, the CA4 field ( Paxinos-2009a ). Updated 30 May 2024.

Also known as: hilus of the dentate gyrus, Hilus gyri dentati, field CA4 of hippocampal formation, Region IV of hippocampus proper, Region CA4, field CA4 of the hippocampus, Hilus fasciae dentatae

NeuroNames ID: 181

All Names & Sources

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English

field CA4 of hippocampal formation

Carpenter-1983

English

field CA4 of the hippocampus

Paxinos-2009a

English

hilus of the dentate gyrus

Amaral-1990

English

Region CA4

Wikipedia-2024a

English

Region IV of hippocampus proper

Wikipedia-2024a

Illustrations

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multiple views of
3D reconstruction in
Macaca mulatta

Species With The Structure

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

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Basis

Has Equivalent

Organism

Their Name

Source

Topology

Yes

Homo sapiens (human)

hilus of the dentate gyrus

Amaral-1990

Topology

Yes

Macaca mulatta (Macaca mulatta)

field CA4 of hippocampal formation

Carpenter-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)