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Modeling individual preferences reveals that face beauty is not universally perceived across cultures
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In: Curr Biol (2021)
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Cortical tracking of speech in noise accounts for reading strategies in children
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Simple acoustic features can explain phoneme-based predictions of cortical responses to speech
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Simple Acoustic Features Can Explain Phoneme-Based Predictions of Cortical Responses to Speech
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Data from: Contributions of local speech encoding and functional connectivity to audio-visual speech perception ...
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Contributions of local speech encoding and functional connectivity to audio-visual speech perception
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In: ISSN: 2050-084X ; EISSN: 2050-084X ; eLife ; https://hal.archives-ouvertes.fr/hal-02440721 ; eLife, eLife Sciences Publication, 2017, 6, https://elifesciences.org/articles/24763. ⟨10.7554/eLife.24763⟩ (2017)
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Abstract:
International audience ; Seeing a speaker’s face enhances speech intelligibility in adverse environments. We investigated the underlying network mechanisms by quantifying local speech representations and directed connectivity in MEG data obtained while human participants listened to speech of varying acoustic SNR and visual context. During high acoustic SNR speech encoding by temporally entrained brain activity was strong in temporal and inferior frontal cortex, while during low SNR strong entrainment emerged in premotor and superior frontal cortex. These changes in local encoding were accompanied by changes in directed connectivity along the ventral stream and the auditory-premotor axis. Importantly, the behavioral benefit arising from seeing the speaker’s face was not predicted by changes in local encoding but rather by enhanced functional connectivity between temporal and inferior frontal cortex. Our results demonstrate a role of auditory-frontal interactions in visual speech representations and suggest that functional connectivity along the ventral pathway facilitates speech comprehension in multisensory environments.
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Keyword:
[SCCO.NEUR]Cognitive science/Neuroscience; Auditory-Cortex; Brain Network; Cortical Representation; Degraded Speech; Dynamic Faces; Multisensory Integration; Neuronal Oscillations; Premotor Cortex; Right-Hemisphere; Visual Speech
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URL: https://doi.org/10.7554/eLife.24763 https://hal.archives-ouvertes.fr/hal-02440721
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Contributions of local speech encoding and functional connectivity to audio-visual speech perception ...
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Contributions of local speech encoding and functional connectivity to audio-visual speech perception
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Auditory cortical delta-entrainment interacts with oscillatory power in multiple fronto-parietal networks
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Frontal top-down signals increase coupling of auditory low-frequency oscillations to continuous speech in human listeners
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Irregular speech rate dissociates auditory cortical entrainment, evoked responses, and frontal alpha
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Frontal Top-Down Signals Increase Coupling of Auditory Low-Frequency Oscillations to Continuous Speech in Human Listeners
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Irregular Speech Rate Dissociates Auditory Cortical Entrainment, Evoked Responses, and Frontal Alpha
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