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Article Dans Une Revue Communications Biology Année : 2023

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

Alexia Bourgeois
  • Fonction : Auteur

Résumé

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.

Dates et versions

hal-04363549 , version 1 (25-12-2023)

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Citer

Jianghao Liu, Dimitri Bayle, Alfredo Spagna, Jacobo 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-04363549⟩
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