Language beyond the language system:Dorsal visuospatial pathways support processing of demonstratives and spatial language during naturalistic fast fMRI

Rocca, Roberta, Coventry, Kenny R., Tylén, Kristian, Staib, Marlene, Lund, Torben E. and Wallentin, Mikkel (2020) Language beyond the language system:Dorsal visuospatial pathways support processing of demonstratives and spatial language during naturalistic fast fMRI. NeuroImage, 216. ISSN 1053-8119

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Abstract

Spatial demonstratives are powerful linguistic tools used to establish joint attention. Identifying the meaning of semantically underspecified expressions like “this one” hinges on the integration of linguistic and visual cues, attentional orienting and pragmatic inference. This synergy between language and extralinguistic cognition is pivotal to language comprehension in general, but especially prominent in demonstratives. In this study, we aimed to elucidate which neural architectures enable this intertwining between language and extralinguistic cognition using a naturalistic fMRI paradigm. In our experiment, 28 participants listened to a specially crafted dialogical narrative with a controlled number of spatial demonstratives. A fast multiband-EPI acquisition sequence (TR = 388 m s) combined with finite impulse response (FIR) modelling of the hemodynamic response was used to capture signal changes at word-level resolution. We found that spatial demonstratives bilaterally engage a network of parietal areas, including the supramarginal gyrus, the angular gyrus, and precuneus, implicated in information integration and visuospatial processing. Moreover, demonstratives recruit frontal regions, including the right FEF, implicated in attentional orienting and reference frames shifts. Finally, using multivariate similarity analyses, we provide evidence for a general involvement of the dorsal (“where”) stream in the processing of spatial expressions, as opposed to ventral pathways encoding object semantics. Overall, our results suggest that language processing relies on a distributed architecture, recruiting neural resources for perception, attention, and extra-linguistic aspects of cognition in a dynamic and context-dependent fashion.

Item Type: Article
Uncontrolled Keywords: dorsal stream,naturalistic fmri,spatial cognition,spatial demonstratives,spatial language,neurology,cognitive neuroscience ,/dk/atira/pure/subjectarea/asjc/2800/2808
Faculty \ School: Faculty of Social Sciences > School of Psychology
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 25 Oct 2019 13:30
Last Modified: 04 Aug 2020 23:45
URI: https://ueaeprints.uea.ac.uk/id/eprint/72784
DOI: 10.1016/j.neuroimage.2019.116128

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