Bipartite functional fractionation within the neural system for social cognition supports the psychological continuity of self versus other.
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Publication Date
2023-02-07Journal Title
Cereb Cortex
ISSN
1047-3211
Publisher
Oxford University Press (OUP)
Pages
bhac135
Type
Article
This Version
VoR
Physical Medium
Print-Electronic
Metadata
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Chiou, R., Cox, C. R., & Lambon Ralph, M. A. (2023). Bipartite functional fractionation within the neural system for social cognition supports the psychological continuity of self versus other.. Cereb Cortex, bhac135. https://doi.org/10.1093/cercor/bhac135
Abstract
Research of social neuroscience establishes that regions in the brain's default-mode network (DN) and semantic network (SN) are engaged by socio-cognitive tasks. Research of the human connectome shows that DN and SN regions are both situated at the transmodal end of a cortical gradient but differ in their loci along this gradient. Here we integrated these 2 bodies of research, used the psychological continuity of self versus other as a "test-case," and used functional magnetic resonance imaging to investigate whether these 2 networks would encode social concepts differently. We found a robust dissociation between the DN and SN-while both networks contained sufficient information for decoding broad-stroke distinction of social categories, the DN carried more generalizable information for cross-classifying across social distance and emotive valence than did the SN. We also found that the overarching distinction of self versus other was a principal divider of the representational space while social distance was an auxiliary factor (subdivision, nested within the principal dimension), and this representational landscape was more manifested in the DN than in the SN. Taken together, our findings demonstrate how insights from connectome research can benefit social neuroscience and have implications for clarifying the 2 networks' differential contributions to social cognition.
Keywords
MVPA, cortical organization, default-mode network, self, semantic network, Humans, Brain, Brain Mapping, Social Cognition, Connectome, Nerve Net, Neural Pathways, Magnetic Resonance Imaging, Cognition
Sponsorship
Wellcome Trust (201381/A/16/Z)
Medical Research Council (MR/R023883/1)
Identifiers
External DOI: https://doi.org/10.1093/cercor/bhac135
This record's URL: https://www.repository.cam.ac.uk/handle/1810/338276
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