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  • 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.

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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  +