Graph theoretical analysis reveals the adaptive role of the left ventral occipito-temporal cortex in the brain networks during speech processing
Graph theoretical analysis reveals the adaptive role of the left ventral occipito-temporal cortex in the brain networks during speech processing
Abstract The left ventral occipito-temporal cortex (left-vOT) plays a key role in reading. Several studies have also reported its activation during speech processing, suggesting that it may play a role beyond written word recognition. Here, we adopt a graph theoretical analysis to investigate the functional role of this area in the whole-brain network while participants processed spoken sentences in different tasks. We find that its role and interactions with other areas changes in an adaptive manner. In a low-level speech perception task, the left-vOT is part of the visual network and acts as a connector that supports the communication with other cognitive systems. When speech comprehension is required, the area becomes a connector within the sensorimotor-auditory network typically recruited during speech processing. However, when comprehension is compromised due to degradation of speech input, the area disengages from the sensorimotor-auditory network. It becomes part of the visual network again and turns from connector into a simple peripheral node. These varying connectivity patterns are coherent with the Interactive Account considering the left-vOT as a convergent zone with multiple functions and interaction patterns that depend on task demands and the nature of sensory input.
Anton Jean-Luc、Dubarry Anne-Sophie、Chanoine Val¨|rie、Planton Samuel、Wang Shuai、Sein Julien、Pallier Christophe、Pattamadilok Chotiga、Nazarian Bruno
Aix Marseille Univ, CNRS, Centre IRM-INT@CERIMED, Institut des Neurosciences de la Timone ¨C UMR 7289Aix Marseille Univ, CNRS, LPLAix Marseille Univ, CNRS, LPL||Aix Marseille Univ, Institute of Language, Communication and the BrainAix Marseille Univ, CNRS, LPL||Cognitive Neuroimaging Unit, INSERM, CEA, CNRS, Universit¨| Paris-Saclay, NeuroSpin centerAix Marseille Univ, CNRS, LPL||Aix Marseille Univ, Institute of Language, Communication and the BrainAix Marseille Univ, CNRS, Centre IRM-INT@CERIMED, Institut des Neurosciences de la Timone ¨C UMR 7289Cognitive Neuroimaging Unit, INSERM, CEA, CNRS, Universit¨| Paris-Saclay, NeuroSpin centerAix Marseille Univ, CNRS, LPLAix Marseille Univ, CNRS, Centre IRM-INT@CERIMED, Institut des Neurosciences de la Timone ¨C UMR 7289
生理学生物物理学语言学
Visual Word Form Areafunctional roleInteractive Accountfunctional connectivitySpoken language
Anton Jean-Luc,Dubarry Anne-Sophie,Chanoine Val¨|rie,Planton Samuel,Wang Shuai,Sein Julien,Pallier Christophe,Pattamadilok Chotiga,Nazarian Bruno.Graph theoretical analysis reveals the adaptive role of the left ventral occipito-temporal cortex in the brain networks during speech processing[EB/OL].(2025-03-28)[2025-08-02].https://www.biorxiv.org/content/10.1101/2022.02.03.478936.点此复制
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