Biology:Brodmann area 30

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Brodmann area 30
Brodmann Cytoarchitectonics 30.png
Medial parietal lobe close up.png
Medial surface of human brain. BA23 is shown in blue.
LatinArea retrosplenialis agranularis
Anatomical terms of neuroanatomy

Brodmann area 30, also known as agranular retrolimbic area 30, is a subdivision of the cytoarchitecturally defined retrosplenial region of the cerebral cortex. In the human it is located in the isthmus of cingulate gyrus. Cytoarchitecturally it is bounded internally by the granular retrolimbic area 29, dorsally by the ventral posterior cingulate area 23 and ventrolaterally by the ectorhinal area 36 (Brodmann-1909).

In primates, Brodmann area 30 demonstrates projections to the mid-dorsolateral prefrontal cortex (Brodmann areas 46 and 9) [1] and the thalamus.[2] Additionally, approximately 20% of cortical inputs to the entorhinal cortex arise from the retrosplenial cortex.[3]

Individuals with lesions to retrosplenial cortex, predominately Brodmann’s area 30, demonstrate dysfunction in their topographical orientation,[4] including defective navigation in novel and familiar environments.

See also


  1. Morris, Renée; Petrides, Michael; Pandya, Deepak N. (July 1999). "Architecture and connections of retrosplenial area 30 in the rhesus monkey (macaca mulatta).". European Journal of Neuroscience 11 (7): 2506–2518. doi:10.1046/j.1460-9568.1999.00672.x. ISSN 0953-816X. 
  2. Robertson, Richard T.; Kaitz, Suzan S. (1981-01-20). "Thalamic connections with limbic cortex. I. Thalamocortical projections". Journal of Comparative Neurology 195 (3): 501–525. doi:10.1002/cne.901950308. ISSN 0021-9967. 
  3. Insausti, R.; Amaral, D. G.; Cowan, W. M. (1987-10-15). "The entorhinal cortex of the monkey: II. Cortical afferents". Journal of Comparative Neurology 264 (3): 356–395. doi:10.1002/cne.902640306. ISSN 0021-9967. 
  4. Maguire, Eleanor (July 2001). "The retrosplenial contribution to human navigation: A review of lesion and neuroimaging findings". Scandinavian Journal of Psychology 42 (3): 225–238. doi:10.1111/1467-9450.00233. ISSN 0036-5564.