Journal
CEREBRAL CORTEX
Volume 30, Issue 6, Pages 3518-3527Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhz323
Keywords
deactivation; default network; Human Connectome Project; population receptive field; ultra-high-field fMRI
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Funding
- Marie Sklodowska-Curie Action Individual Fellowship [704537]
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek-Chinese Academy of Sciences (NWO-CAS) [012.200. 012]
- Amsterdam Brain and Mind Project (ABMP) [20157]
- Marie Curie Actions (MSCA) [704537] Funding Source: Marie Curie Actions (MSCA)
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The default network (DN) is a brain network with correlated activities spanning frontal, parietal, and temporal cortical lobes. The DN activates for high-level cognition tasks and deactivates when subjects are actively engaged in perceptual tasks. Despite numerous observations, the role of DN deactivation remains unclear. Using computational neuroimaging applied to a large dataset of the Human Connectome Project (HCP) and to two individual subjects scanned over many repeated runs, we demonstrate that the DN selectively deactivates as a function of the position of a visual stimulus. That is, we show that spatial vision is encoded within the DN by means of deactivation relative to baseline. Our results suggest that the DN functions as a set of high-level visual regions, opening up the possibility of using vision-science tools to understand its putative function in cognition and perception.
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