area 8A (8A)

The term area 8A refers to the more lateral of two components of area 8 in the human. It is located posteriorly in the medial frontal gyrus. Defined on the basis of multiple stains, it is bounded dorsally by area 8B, rostrally by area 9/46; caudally by area 6, and ventrocaudally by area 44. It has two parts, area 8Ad and area 8Av. Its equivalent in the macaque is located in the angle of the arcuate sulcus ( Petrides-2012 ). As granular prefrontal cortex, it has no equivalent in the rat ( Zilles-2012 ).

Also known as: area 8A, area 8a of cortex

NeuroNames ID: 3516

All Names & Sources

Showing 3 synonym(s)

Name:

area 8A

Language:

English

Organism:

human

Citation:

Chapter 26 in The Human Nervous System, Third Edition, JK Mai and G Paxinos (Eds.), pp. 618-677, Amsterdam: Elsevier.

Source Title:

The Frontal Cortex

Name:

8A

Language:

acronym

Organism:

human

Citation:

Chapter 26 in The Human Nervous System, Third Edition, JK Mai and G Paxinos (Eds.), pp. 618-677, Amsterdam: Elsevier.

Source Title:

The Frontal Cortex

Name:

area 8a of cortex

Language:

English

Organism:

macaque

Citation:

Chapter 2 in The Rhesus Monkey Brain, Second Edition. Amsterdam: Elsevier/Academic Press

Source Title:

A Delineation of the Monkey Cortex on the Basis of the Distribution of a Neurofilament Protein

No illustrations found

No illustrations available for this concept.

No specie structures found

No specie structures available for this concept.

Models Where It Appears
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'.