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Previous studies helped unraveling the functional architecture of the human cerebral cortex. However, a comprehensive functional segregation of right lateral prefrontal cortex is missing. Here, we delineated cortical clusters in right area 44 and 45 based on their task-constrained whole-brain activation patterns across neuroimaging experiments obtained from a large database. We identified 5 clusters that differed with respect to their coactivation patterns, which were consistent with resting-state functional connectivity patterns of an independent dataset. Two clusters in the posterior inferior frontal gyrus (IFG) were functionally associated with action inhibition and execution, while two anterior clusters were related to reasoning and social cognitive processes. A fifth cluster was associated with spatial attention. Strikingly, the functional organization of the right IFG can thus be characterized by a posterior-to-anterior axis with action-related functions on the posterior and cognition-related functions on the anterior end. We observed further subdivisions along a dorsal-to-ventral axis in posterior IFG between action execution and inhibition, and in anterior IFG between reasoning and social cognition. The different clusters were integrated in distinct large-scale networks for various cognitive processes. These results provide evidence for a general organization of cognitive processes along axes spanning from more automatic to more complex cognitive processes.

Original publication

DOI

10.1093/cercor/bhy049

Type

Journal article

Journal

Cereb Cortex

Publication Date

01/04/2019

Volume

29

Pages

1532 - 1546

Keywords

action, functional connectivity, functional decoding, meta-analysis, social cognition, Attention, Brain, Brain Mapping, Cluster Analysis, Cognition, Databases, Factual, Functional Laterality, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Neural Pathways, Prefrontal Cortex, Psychomotor Performance