Time to Face Language: Embodied Mechanisms Underpin the Inception of Face-Related Meanings in the Human Brain

In construing meaning, the brain recruits multimodal (conceptual) systems and embodied (modality-specific) mechanisms. Yet, no consensus exists on how crucial the latter are for the inception of semantic distinctions. To address this issue, we combined electroencephalographic (EEG) and intracranial...

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Detalhes bibliográficos
Autores: García, Adolfo Martín, Hesse Rizzi, Eugenia Fátima, Birba, Agustina, Gonzalez Adolfi, Federico, Mikulan, Ezequiel Pablo, Martorell Caro, Miguel Angel, Petroni, Agustín, Bekinchstein, Tristán, García, María del Carmen, Silva, Walter, Ciraolo, Carlos, Vaucheret Paz, Esteban Fabian, Sedeño, Lucas, Ibañez, Agustin Mariano
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/151651
Acesso em linha:http://hdl.handle.net/11336/151651
Access Level:acceso abierto
Palavra-chave:EEG
EMBODIED COGNITION
FUNCTIONAL CONNECTIVITY
INTRACRANIAL RECORDINGS
SEMANTIC PROCESSING
https://purl.org/becyt/ford/6.2
https://purl.org/becyt/ford/6
https://purl.org/becyt/ford/5.1
https://purl.org/becyt/ford/5
Descrição
Resumo:In construing meaning, the brain recruits multimodal (conceptual) systems and embodied (modality-specific) mechanisms. Yet, no consensus exists on how crucial the latter are for the inception of semantic distinctions. To address this issue, we combined electroencephalographic (EEG) and intracranial EEG (iEEG) to examine when nouns denoting facial body parts (FBPs) and nonFBPs are discriminated in face-processing and multimodal networks. First, FBP words increased N170 amplitude (a hallmark of early facial processing). Second, they triggered fast (~100 ms) activity boosts within the face-processing network, alongside later (~275 ms) effects in multimodal circuits. Third, iEEG recordings from face-processing hubs allowed decoding ~80% of items before 200 ms, while classification based on multimodal-network activity only surpassed ~70% after 250 ms. Finally, EEG and iEEG connectivity between both networks proved greater in early (0-200 ms) than later (200-400 ms) windows. Collectively, our findings indicate that, at least for some lexico-semantic categories, meaning is construed through fast reenactments of modality-specific experience.

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