Left inferior parietal lobe engagement in social cognition and language
Number of pages
SourceNeuroscience and Biobehavioral Reviews, 68, (2016), pp. 319-334
Article / Letter to editor
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SW OZ DCC KI
Neuroscience and Biobehavioral Reviews
SubjectCognitive artificial intelligence; DI-BCB_DCC_Theme 4: Brain Networks and Neuronal Communication
Social cognition and language are two core features of the human species. Despite distributed recruitment of brain regions in each mental capacity, the left parietal lobe (LPL) represents a zone of topographical convergence. This study quantitatively summarizes previous neuroimaging studies on social cognition and language. Using connectivity-based parcellation on a meta-analytically defined volume of interest (VOI), regional coactivation patterns within this VOI allowed for the identiHcation of functionally distinct subregions. Across parcellation solutions, two clusters emerged consistently in rostro-ventral and caudo-ventral aspects of the parietal VOI. Both clusters were functionally signiHcantly associated with social-cognitive and language processing. In particular, the rostra-ventral cluster was associated with lower-level processing facets, while the caudo-ventral cluster was associated with higher-level processes across both functions. Contrarily, in the (less stable) dorsal parietal VOI, all clusters reKected computation of general-purpose processes, including working memory and matching tasks, that are frequently co-recruited by social or language processes. Our results hence favor a rostro-caudal distinction of low- vs. high-level processes underlying social cognition and language in the left inferior parietal lobe.
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