heterotypic cortex

The term heterotypic cortex refers to those areas of mature cerebral cortex that deviate markedly from the homogeneous six- layered internal structure seen in the third trimester of gestation. heterotypic cortex is contrasted to homotypic cortex, which retains the fetal six-layered pattern into adulthood. Together they constitute the neocortex. A limited number of neocortical areas undergo modification to more than six layers. They include the primary visual area ( primary visual cortex ), in which both the internal granular layer (IV) and the external pyramidal layer (III) divide into two or three sublayers, and the insula, if one considers the underlying claustrum to have originated during development from the multiform layer (VI), enlarged, and become separated from the insula by fibers of the extreme capsule. Other heterotypic areas are characterized by a decrease in layers, for the most part due to the merger or absence of the external granular layer and/or the internal granular layer. They include the motor cortex ( area 4 of Brodmann (human), area 6 of Brodmann (human), area 8 of Brodmann (human) ); the anterior cingulate gyrus ( area 24 of Brodmann (human), area 25, area 33 of Brodmann); the retrosplenial area ( area 30 of Brodmann (human) ) and the perirhinal area ( area 35 of Brodmann ); the agranular insula, and their equivalents in other species. The the specific areas of heterotypic cortex differ somewhat by species ( Brodmann-1909 ).

Also known as: heterotypic cortex, heterotypical cortex, heterotypical formations

NeuroNames ID: 1510

All Names & Sources

1 of 7

Showing 7 synonym(s) - Use arrows to navigate

Showing 7 synonym(s)

Name:

heterotypisch

Language:

German

Organism:

human

Source:

Schiebler-1999

Citation:

Eighth Edition, Springer Verlag, Berlin, 1999.

Source Title:

Anatomie

Name:

heterotypic cortex

Language:

English

Organism:

human

Source:

Crosby-1962

Citation:

New York: MacMillan, 1962

Source Title:

Correlative Anatomy of the Nervous System

Name:

heterotypical cortex

Language:

English

Organism:

human

Source:

Carpenter-1983

Citation:

Baltimore: Williams and Wilkins Co., 1983

Source Title:

Human Neuroanatomy

Name:

corteza heterotípica

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

Name:

heterotypische Formationen

Language:

German

Organism:

mammal

Source:

Brodmann-1909

Citation:

IV. Kapitel in Vergleichende Lokalisationslehre der Grosshirnrinde (Leipzig: Verlag von Johann Ambrosias Barth), 1909

Source Title:

Beschreibung der einzelnen Hirnkarten

Name:

heterotypical formations

Language:

English

Organism:

mammal

Source:

Garey-1999

Citation:

Garey LK (translator/editor) Brodmann's 'Localisation in the Cerebral Cortex', Imperial College Press, London, 1999.

Source Title:

Brodmann's 'Localisation in the Cerebral Cortex'

Name:

área heterotípica

Language:

Spanish

Organism:

human

Source:

Carpenter-1994

Citation:

edicion 4, Williams & Wilkins, Baltimore; traducción de Editorial Medica Panamericana, Buenos Aires, efectuada por el Dr. Alejandro Kaufman

Source Title:

Neuroanatomía Fundamentos

No illustrations found

No illustrations available for this concept.

Species With The Structure

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

1 of 2

Showing 2 record(s) - Use arrows to navigate

Showing 2 record(s)

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

heterotypic cortex

Source:

Crosby-1962

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

heterotypical cortex

Source:

Carpenter-1983

No models found

No models available for this concept.