Fronto-parietal networks shape human conscious report through attention gain and reorienting - Sorbonne Université Access content directly
Journal Articles Communications Biology Year : 2023

Fronto-parietal networks shape human conscious report through attention gain and reorienting

Abstract

How do attention and consciousness interact in the human brain? Rival theories of consciousness disagree on the role of fronto-parietal attentional networks in conscious perception. We recorded neural activity from 727 intracerebral contacts in 13 epileptic patients, while they detected near-threshold targets preceded by attentional cues. Clustering revealed three neural patterns: first, attention-enhanced conscious report accompanied sustained right-hemisphere fronto-temporal activity in networks connected by the superior longitudinal fasciculus (SLF) II-III, and late accumulation of activity (>300 ms post-target) in bilateral dorso-prefrontal and right-hemisphere orbitofrontal cortex (SLF I-III). Second, attentional reorienting affected conscious report through early, sustained activity in a right-hemisphere network (SLF III). Third, conscious report accompanied left-hemisphere dorsolateral-prefrontal activity. Task modeling with recurrent neural networks revealed multiple clusters matching the identified brain clusters, elucidating the causal relationship between clusters in conscious perception of near-threshold targets. Thus, distinct, hemisphere-asymmetric fronto-parietal networks support attentional gain and reorienting in shaping human conscious experience.
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Origin : Publication funded by an institution
Licence : CC BY - Attribution

Dates and versions

hal-04254935 , version 1 (23-10-2023)

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Jianghao Liu, Dimitri J Bayle, Alfredo Spagna, Jacobo D Sitt, Alexia Bourgeois, et al.. Fronto-parietal networks shape human conscious report through attention gain and reorienting. Communications Biology, 2023, 6 (1), pp.730. ⟨10.1038/s42003-023-05108-2⟩. ⟨hal-04254935⟩
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