arrow

From NeuroLex

Jump to: navigation, search


  • ID: birnlex_1734
  • Synonym: area 3 of Brodmann-1909
  • Synonym: Brodmann.3
  • Synonym: Brodmann area 3, rostral postcentral
  • Synonym: Area postcentralis oralis
  • Neuro Names ID: 1042
  • Editorial Note: 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.
  • Externally Sourced Definition: The term area 3 of Brodmann-1909 refers to a cytoarchitecturally defined portion of cerebral cortex of the guenon that is located predominantly in the postcentral gyrus, but ventrally in a portion of the precentral gyrus as well. Brodmann-1909 regarded it as topographically and cytoarchitecturally homologous to the human rostral postcentral area 3. Distinctive features (Brodmann-1905): compared to area 1 of Brodmann-1909 and area 2 of Brodmann-1909 the cortical thickness of area 3 is unusually thin, in fact, among the thinnest areas of the cerebral cortex; the cells of sublayer 3b of the external pyramidal layer (III) are smaller, plumper and more densely distributed in a tighter strip; cells of the internal granular layer (IV) are distributed more sparsely; the internal pyramidal layer (V) is relatively clear with scattered large to very large pyramid shaped ganglion cells separated by tangentially oriented fiber bundles; the multiform layer (VI) is composed of a dense population of homogeneously distributed cells such that sublayers are absent and the boundary with the subcortical white matter is distinct. According to Roberts-63 the external granular layer (II), layer III and layer IV are not clearly demarcated from each other and are all densely packed with small cells.
  • UMLSCUI: C1272525
  • Modified Date: 2007-10-02
  • Created Date: 2007-10-02
  • Comment: This term applies only to the guenon; Brain Info also has a human definition. We need to add that to NeuroLex.

Contributors

Admin, Memartone, Nifbot2



bookmark

*Neurolex imports many terms from existing community ontologies, e.g., the Gene Ontology. We try to re-use the original identifier when possible and often import content from the original ontology. However, Neurolex 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 area 3RDF feed
CommentThis term applies only to the guenon; Brain Info also has a human definition. We need to add that to NeuroLex.
Created2 October 2007  +
CuratorHttp://purl.org/nbirn/birnlex/ontology/annotation/BIRNLex annotation properties.owl  +
DefinitionSourceHttp://purl.org/nbirn/birnlex/ontology/annotation/BIRNLex annotation properties.owl  +
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 3 of Brodmann-1909 refers to The term area 3 of Brodmann-1909 refers to a cytoarchitecturally defined portion of cerebral cortex of the guenon that is located predominantly in the postcentral gyrus, but ventrally in a portion of the precentral gyrus as well. Brodmann-1909 regarded it as topographically and cytoarchitecturally homologous to the human rostral postcentral area 3. Distinctive features (Brodmann-1905): compared to area 1 of Brodmann-1909 and area 2 of Brodmann-1909 the cortical thickness of area 3 is unusually thin, in fact, among the thinnest areas of the cerebral cortex; the cells of sublayer 3b of the external pyramidal layer (III) are smaller, plumper and more densely distributed in a tighter strip; cells of the internal granular layer (IV) are distributed more sparsely; the internal pyramidal layer (V) is relatively clear with scattered large to very large pyramid shaped ganglion cells separated by tangentially oriented fiber bundles; the multiform layer (VI) is composed of a dense population of homogeneously distributed cells such that sublayers are absent and the boundary with the subcortical white matter is distinct. According to Roberts-63 the external granular layer (II), layer III and layer IV are not clearly demarcated from each other and are all densely packed with small cells. d are all densely packed with small cells.
Idbirnlex_1734  +
ModifiedDate2 October 2007  +
NeuronamesID1042  +
NeuronamesLinkhttp://braininfo.rprc.washington.edu/Scripts/hiercentraldirectory.aspx?ID=1042  +
Synonymarea 3 of Brodmann-1909  +, Brodmann.3  +, Brodmann area 3, rostral postcentral  +, and Area postcentralis oralis  +
UmlscuiC1272525  +