Connectivity-Based Subdivisions of the Human Right “Temporoparietal Junction Area”: Evidence for Different Areas Participating in Different Cortical Networks (original) (raw)
Journal Article
1Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, UK
2Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford, Oxford, OX3 9DU, UK
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1Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, UK
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1Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, UK
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2Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford, Oxford, OX3 9DU, UK
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3Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Nijmegen, 6500 HB Nijmegen, The Netherlands
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1Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, UK
2Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford, Oxford, OX3 9DU, UK
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Published:
27 September 2011
Cite
Rogier B. Mars, Jérôme Sallet, Urs Schüffelgen, Saad Jbabdi, Ivan Toni, Matthew F. S. Rushworth, Connectivity-Based Subdivisions of the Human Right “Temporoparietal Junction Area”: Evidence for Different Areas Participating in Different Cortical Networks, Cerebral Cortex, Volume 22, Issue 8, August 2012, Pages 1894–1903, https://doi.org/10.1093/cercor/bhr268
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Abstract
Controversy surrounds the role of the temporoparietal junction (TPJ) area of the human brain. Although TPJ has been implicated both in reorienting of attention and social cognition, it is still unclear whether these functions have the same neural basis. Indeed, whether TPJ is a precisely identifiable cortical region or a cluster of subregions with separate functions is still a matter of debate. Here, we examined the structural and functional connectivity of TPJ, testing whether TPJ is a unitary area with a heterogeneous functional connectivity profile or a conglomerate of regions with distinctive connectivity. Diffusion-weighted imaging tractrography–based parcellation identified 3 separate regions in TPJ. Resting-state functional connectivity was then used to establish which cortical networks each of these subregions participates in. A dorsal cluster in the middle part of the inferior parietal lobule showed resting-state functional connectivity with, among other areas, lateral anterior prefrontal cortex. Ventrally, an anterior TPJ cluster interacted with ventral prefrontal cortex and anterior insula, while a posterior TPJ cluster interacted with posterior cingulate, temporal pole, and anterior medial prefrontal cortex. These results indicate that TPJ can be subdivided into subregions on the basis of its structural and functional connectivity.
© The Author 2011. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: [email protected]
Topic:
- diffusion weighted imaging
- heterogeneity
- human rights
- prefrontal cortex
- brain
- functional magnetic resonance imaging
- voxel
- diffusion tractography
- social cognition
- anterior insula
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