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@ARTICLE{Ruland:907292,
author = {Ruland, Sabine Helene and Palomero-Gallagher, Nicola and
Hoffsteadter, Felix and Eickhoff, Simon B. and Mohlberg,
Hartmut and Amunts, Katrin},
title = {{T}he inferior frontal sulcus: cortical segregation,
molecular architecture and function},
journal = {Cortex},
volume = {153},
issn = {0010-9452},
address = {New York, NY},
publisher = {Elsevier},
reportid = {FZJ-2022-01943},
pages = {235-256},
year = {2022},
abstract = {The inferior frontal sulcus is conceptualized as the
landmark delineating ventro-from dorsolateral prefrontal
cortex. Functional imaging studies report activations within
the sulcus during tasks addressing cognitive control and
verbal working memory, while their microstructural
correlates are not well defined. Existing microstructural
maps, e.g., Brodmann's map, do not distinguish separate
areas within the sulcus. We identified six new areas in the
inferior frontal sulcus and its junction to the precentral
sulcus, ifs1-4, ifj1-ifj2, by combined cytoarchitectonic
analysis and receptor autoradiography. A hierarchical
cluster analysis of receptor densities of these and
neighbouring prefrontal areas revealed that they form a
distinct cluster within the prefrontal cortex. Major
interhemispheric differences were found in both cyto- and
receptorarchitecture. The function of cytoarchitectonically
identified areas was explored by comparing probabilistic
maps of the areas in stereotaxic space with their functions
and co-activation patterns as analysed by means of a
coordinate-based meta-analysis. We found a bilateral
involvement in working memory, as well as a lateralization
of different language-related processes to the left
hemisphere, and of music processing and attention to the
right-hemispheric areas. Particularly ifj2 might act as a
functional hub between the networks. The cytoarchitectonic
maps and receptor densities provide a powerful tool to
further elucidate the function of these areas. The maps are
available through the Human Brain Atlas of the Human Brain
Project and serve in combination with the information on the
cyto- and receptor architecture of the areas as a resource
for brain models and simulations},
cin = {INM-1 / INM-7},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406 / I:(DE-Juel1)INM-7-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525) / HBP SGA3 - Human Brain Project Specific Grant
Agreement 3 (945539)},
pid = {G:(DE-HGF)POF4-5251 / G:(EU-Grant)945539},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35568575},
UT = {WOS:000884386800004},
doi = {10.1016/j.cortex.2022.03.019},
url = {https://juser.fz-juelich.de/record/907292},
}