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Brodmann (1909) area 21

Name: Brodmann (1909) area 21
Synonym(s): Brodmann area 21, middle temporal, Area temporalis media, area 21 of Brodmann-1909, Brodmann.21
Abbreviation: B09-21
Super-category: Brodmann partition scheme region
*Id: birnlex_1752
Link to OWL / RDF: Download this content as OWL/RDF
Neuronames ID ( what's this?): 1054


  • Externally Sourced Definition: The term area 21 of Brodmann-1909 refers to a subdivision of the cerebral cortex of the guenon defined on the basis of cytoarchitecture. It is cytoarchitecturally homologous to the middle temporal area 21 of the human (Brodmann-1909). Distinctive features (Brodmann-1905): Compared to area 20 of Brodmann-1909, the total cortical thickness of area 21 is greater, the granular cells are less abundant, and the boundary with the subcortical white matter is less distinct; the molecular layer (I) is wider; the pyramidal cells of sublayer 3b of the external pyramidal layer (III) are larger; the internal granular layer (IV) is less developed and contains fewer cells; ganglion cells of the internal pyramidal layer (V) are larger, rounder, and densely arrayed adjacent to layer IV; the boundary between layer V and the multiform layer (VI) is indistinct; and layer VI is wider and has no sublayers.
  • Abbreviation Source: SumsDB_abbrevSource

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*Note: Neurolex imports many terms and their ids from existing community ontologies, e.g., the Gene Ontology. Neurolex, however, is a dynamic site and any content beyond the identifier should not be presumed to reflect the content or views of the source ontology. Users should consult with the authoritative source for each ontology for current information.

Facts about Brodmann (1909) area 21RDF feed
AbbrevB09-21  +
AbbrevSourceSumsDB_abbrevSource  +
Created2 October 2007  +
CurationStatusuncurated  +
DefinitionSourceNeuroNames  +
EditorialNoteThe lobular mapping of Brodmann areas has The lobular mapping of Brodmann areas has been adapted from the LOCATION hierarchy in Brainmap.org. To date (2007-10-02) this only define the set of lateralized cerebral lobe locations where a given Brodmann area is located. The intension is to eventually incorporate the more detailed gyri and sulci relations as well. detailed gyri and sulci relations as well.
ExternallySourcedDefinitionThe term area 21 of Brodmann-1909 refers t The term area 21 of Brodmann-1909 refers to a subdivision of the cerebral cortex of the guenon defined on the basis of cytoarchitecture. It is cytoarchitecturally homologous to the middle temporal area 21 of the human (Brodmann-1909). Distinctive features (Brodmann-1905): Compared to area 20 of Brodmann-1909, the total cortical thickness of area 21 is greater, the granular cells are less abundant, and the boundary with the subcortical white matter is less distinct; the molecular layer (I) is wider; the pyramidal cells of sublayer 3b of the external pyramidal layer (III) are larger; the internal granular layer (IV) is less developed and contains fewer cells; ganglion cells of the internal pyramidal layer (V) are larger, rounder, and densely arrayed adjacent to layer IV; the boundary between layer V and the multiform layer (VI) is indistinct; and layer VI is wider and has no sublayers. nd layer VI is wider and has no sublayers.
Idbirnlex_1752  +
LabelBrodmann (1909) area 21  +
ModifiedDate26 April 2010  +
NeuronamesLinkhttp://braininfo.rprc.washington.edu/Scripts/hiercentraldirectory.aspx?ID=1054  +
SuperCategoryBrodmann partition scheme region  +
SynonymBrodmann area 21  +, middle temporal  +, Area temporalis media  +, area 21 of Brodmann-1909  +, and Brodmann.21  +
UmlscuiC1272539  +