EditFrom NeuroLex
- 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.
- Definition Source: http://purl.org/nbirn/birnlex/ontology/annotation/BIRNLex_annotation_properties.owl#NeuroNames
- UMLSCUI: C1272525
- Modified Date: 2007-10-02
- Curator: http://purl.org/nbirn/birnlex/ontology/annotation/BIRNLex_annotation_properties.owl#Bill_Bug
- 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.
Facts about Brodmann area 3RDF feed
| Comment | This term applies only to the guenon; Brain Info also has a human definition. We need to add that to NeuroLex. |
| Created | 2 October 2007 + |
| Curator | Http://purl.org/nbirn/birnlex/ontology/annotation/BIRNLex annotation properties.owl + |
| DefinitionSource | Http://purl.org/nbirn/birnlex/ontology/annotation/BIRNLex annotation properties.owl + |
| EditorialNote | The 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. |
| ExternallySourcedDefinition | The 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. |
| Id | birnlex_1734 + |
| ModifiedDate | 2 October 2007 + |
| NeuronamesID | 1042 + |
| NeuronamesLink | http://braininfo.rprc.washington.edu/Scripts/hiercentraldirectory.aspx?ID=1042 + |
| Synonym | area 3 of Brodmann-1909 +, Brodmann.3 +, Brodmann area 3, rostral postcentral +, and Area postcentralis oralis + |
| Umlscui | C1272525 + |