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  Convergence of semantics and emotional expression within the IFG pars orbitalis

Belyk, M., Brown, S., Lim, J., & Kotz, S. A. (2017). Convergence of semantics and emotional expression within the IFG pars orbitalis. NeuroImage, 156, 240-248. doi:10.1016/j.neuroimage.2017.04.020.

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Belyk, Michel1, 2, Author
Brown, Steven2, Author
Lim, Jessica2, Author
Kotz, Sonja A.1, 3, Author              
1Faculty of Psychology and Neuroscience, Maastricht University, the Netherlands, ou_persistent22              
2Department of Psychology, Neuroscience, and Behaviour, McMaster University, Hamilton, ON, Canada, ou_persistent22              
3Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              


Free keywords: Emotion; Inferior frontal gyrus; Meta-analysis; Parcellation; Pars orbitalis; Semantics
 Abstract: Humans communicate through a combination of linguistic and emotional channels, including propositional speech, writing, sign language, music, but also prosodic, facial, and gestural expression. These channels can be interpreted separately or they can be integrated to multimodally convey complex meanings. Neural models of the perception of semantics and emotion include nodes for both functions in the inferior frontal gyrus pars orbitalis (IFGorb). However, it is not known whether this convergence involves a common functional zone or instead specialized subregions that process semantics and emotion separately. To address this, we performed Kernel Density Estimation meta-analyses of published neuroimaging studies of the perception of semantics or emotion that reported activation in the IFGorb. The results demonstrated that the IFGorb contains two zones with distinct functional profiles. A lateral zone, situated immediately ventral to Broca's area, was implicated in both semantics and emotion. Another zone, deep within the ventral frontal operculum, was engaged almost exclusively by studies of emotion. Follow-up analysis using Meta-Analytic Connectivity Modeling demonstrated that both zones were frequently co-activated with a common network of sensory, motor, and limbic structures, although the lateral zone had a greater association with prefrontal cortical areas involved in executive function. The status of the lateral IFGorb as a point of convergence between the networks for processing semantic and emotional content across modalities of communication is intriguing since this structure is preserved across primates with limited semantic abilities. Hence, the IFGorb may have initially evolved to support the comprehension of emotional signals, being later co-opted to support semantic communication in humans by forming new connections with brain regions that formed the human semantic network.


Language(s): eng - English
 Dates: 2017-01-092017-04-072017-04-082017-08-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2017.04.020
PMID: 28400265
Other: Epub 2017
 Degree: -



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Funding organization : Auditory Cognitive Neuroscience Society (ACN)
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Grant ID : 04686-15
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Funding organization : Natural Sciences and Engineering Research Council (NSERC)
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Grant ID : BB/M009742/1
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Funding organization : Biotechnology and Biological Science Research Council (BBSRC)

Source 1

Title: NeuroImage
Source Genre: Journal
Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 156 Sequence Number: - Start / End Page: 240 - 248 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166