area 13a - BrainInfo

area 13a (13a)

The term area 13a refers to one of four subdivisions of area 13 in the orbital gyri of the human cerebral cortex. Defined on the basis of multiple stains, it is a small area of agranular cortex located just rostral to the junction of the olfactory tract with the cerebral cortex. It is bounded medially by another small agranular area 14c, laterally by area 13m, and rostrally by area 13b. The other subdivision is area 13l. For the relations of this segmentation and terminology to others, see Ongur-2003. Its equivalent in the macaque is area 13a (macaque). Unlike most prefrontal cortex, which is uniquely primate and granular, it may have an equivalent in the agranular cortex of the rat ( Wallis-2012 ). See orbital areas (rodent).

Also known as: area 13a

NeuroNames ID: 3484

All Names & Sources

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Name:

area 13a

Language:

English

Organism:

human

Source:

Ongur-2003

Citation:

J Comp Neurol. 2003 Jun 2;460(3):425-49.

Source Title:

Architectonic subdivision of the human orbital and medial prefrontal cortex

Name:

13a

Language:

acronym

Organism:

human

Source:

Ongur-2003

Citation:

J Comp Neurol. 2003 Jun 2;460(3):425-49.

Source Title:

Architectonic subdivision of the human orbital and medial prefrontal cortex

Illustrations

Showing 1 illustration(s)

diagrams of medial and
orbital prefrontal cortex in
human and macaque

No specie structures found

No specie structures available for this concept.

Models Where It Appears

orbitomedial prefrontal cortex hierarchy

refers to the organization of substructures of the orbitomedial prefrontal cortex of the human as described in Ongur-2003. The organization is the same in the macaque, except for a few minor differences in internal structure and names based on topology ( Carmichael-1994 ).

orbitomedial prefrontal cortex

orbital frontal cortex

area 13a

agranular orbitofrontal cortex

Topographic Model of Human Cerebral Cortex

The topographic model of human cerebral cortex is a closed partitive hierarchical model of cerebral cortical structure in the human. The cerebral cortex is segmented on the basis of internal structure, connectivity, and/or functions of cortical areas. It is designed to update the comprehensive early twentieth century parcellations of Brodmann and of von Economo and Koskinas and their successors. A work in progress, it integrates the most authoritative, comprehensive, and recent parcellations and nomenclatures from peer-reviewed publications and neuroanatomical texts. For an equivalent model in the rodent, Search BrainInfo for ' Functional CNS Model - Rat '. This segmentation of the human cerebral cortex, based on a combination of internal structure, connectivity, and function, complements the classical segmentation of the cerebral cortex into lobes, lobules, and gyri based on sulcal patterns: For the classical segmentation, see ' cerebral cortex ' and click 'Locus in Brain Hierarchy'.