The Network Architecture of Cortical Processing in Visuo-Spatial Reasoning

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The Network Architecture of Cortical Processing in Visuo-Spatial Reasoning

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title The Network Architecture of Cortical Processing in Visuo-Spatial Reasoning
contributor.author Shokri-Kojori, Ehsan
contributor.author Motes, Michael A.
contributor.author Rypma, Bart
contributor.author Krawczyk, Daniel C.
contributor.sponsor School of Behavioral and Brain Sciences. Center for BrainHealth.
description.abstract Reasoning processes have been closely associated with prefrontal cortex (PFC), but specifically emerge from interactions among networks of brain regions. Yet it remains a challenge to integrate these brain-wide interactions in identifying the flow of processing emerging from sensory brain regions to abstract processing regions, particularly within PFC. Functional magnetic resonance imaging data were collected while participants performed a visuo-spatial reasoning task. We found increasing involvement of occipital and parietal regions together with caudal-rostral recruitment of PFC as stimulus dimensions increased. Brain-wide connectivity analysis revealed that interactions between primary visual and parietal regions predominantly influenced activity in frontal lobes. Caudal-to-rostral influences were found within left-PFC. Right-PFC showed evidence of rostral-to-caudal connectivity in addition to relatively independent influences from occipito-parietal cortices. In the context of hierarchical views of PFC organization, our results suggest that a caudal-to-rostral flow of processing may emerge within PFC in reasoning tasks with minimal top-down deductive requirements.
identifier.issn 2045-2322
identifier.uri http://hdl.handle.net/10735.1/2872
identifier.bibliographicCitation Shokri-Kojori, E., M. A. Motes, B. Rypma, and D. C. Krawczyk. 2012. "The network architecture of cortical processing in visuo-spatial reasoning." Scientific Reports 2 (411).
identifier.volume 2
subject Frontal Lobe
subject Prefrontal Cortex
subject Short-term memory
date.created 8/30/2011
date.issued 5/18/2012
relation.uri http://dx.doi.org/10.1038/srep00411
rights This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
source.journal Scientific Reports

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