Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.

In recent years, numerous studies have provided converging evidence that word meaning is partially stored in modality-specific cortical networks. However, little is known about the mechanisms supporting the integration of this distributed semantic content into coherent conceptual representations. In...

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Autores principales:	Markus J van Ackeren, Shirley-Ann Rueschemeyer
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/15685b3f68ef47b08fb8c3557ad2e7b8
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id	oai:doaj.org-article:15685b3f68ef47b08fb8c3557ad2e7b8
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spelling	oai:doaj.org-article:15685b3f68ef47b08fb8c3557ad2e7b82021-11-25T06:09:10ZCross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.1932-620310.1371/journal.pone.0101042https://doaj.org/article/15685b3f68ef47b08fb8c3557ad2e7b82014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25007074/?tool=EBIhttps://doaj.org/toc/1932-6203In recent years, numerous studies have provided converging evidence that word meaning is partially stored in modality-specific cortical networks. However, little is known about the mechanisms supporting the integration of this distributed semantic content into coherent conceptual representations. In the current study we aimed to address this issue by using EEG to look at the spatial and temporal dynamics of feature integration during word comprehension. Specifically, participants were presented with two modality-specific features (i.e., visual or auditory features such as silver and loud) and asked to verify whether these two features were compatible with a subsequently presented target word (e.g., WHISTLE). Each pair of features described properties from either the same modality (e.g., silver, tiny = visual features) or different modalities (e.g., silver, loud = visual, auditory). Behavioral and EEG data were collected. The results show that verifying features that are putatively represented in the same modality-specific network is faster than verifying features across modalities. At the neural level, integrating features across modalities induces sustained oscillatory activity around the theta range (4-6 Hz) in left anterior temporal lobe (ATL), a putative hub for integrating distributed semantic content. In addition, enhanced long-range network interactions in the theta range were seen between left ATL and a widespread cortical network. These results suggest that oscillatory dynamics in the theta range could be involved in integrating multimodal semantic content by creating transient functional networks linking distributed modality-specific networks and multimodal semantic hubs such as left ATL.Markus J van AckerenShirley-Ann RueschemeyerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 7, p e101042 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Markus J van Ackeren Shirley-Ann Rueschemeyer Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.
description	In recent years, numerous studies have provided converging evidence that word meaning is partially stored in modality-specific cortical networks. However, little is known about the mechanisms supporting the integration of this distributed semantic content into coherent conceptual representations. In the current study we aimed to address this issue by using EEG to look at the spatial and temporal dynamics of feature integration during word comprehension. Specifically, participants were presented with two modality-specific features (i.e., visual or auditory features such as silver and loud) and asked to verify whether these two features were compatible with a subsequently presented target word (e.g., WHISTLE). Each pair of features described properties from either the same modality (e.g., silver, tiny = visual features) or different modalities (e.g., silver, loud = visual, auditory). Behavioral and EEG data were collected. The results show that verifying features that are putatively represented in the same modality-specific network is faster than verifying features across modalities. At the neural level, integrating features across modalities induces sustained oscillatory activity around the theta range (4-6 Hz) in left anterior temporal lobe (ATL), a putative hub for integrating distributed semantic content. In addition, enhanced long-range network interactions in the theta range were seen between left ATL and a widespread cortical network. These results suggest that oscillatory dynamics in the theta range could be involved in integrating multimodal semantic content by creating transient functional networks linking distributed modality-specific networks and multimodal semantic hubs such as left ATL.
format	article
author	Markus J van Ackeren Shirley-Ann Rueschemeyer
author_facet	Markus J van Ackeren Shirley-Ann Rueschemeyer
author_sort	Markus J van Ackeren
title	Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.
title_short	Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.
title_full	Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.
title_fullStr	Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.
title_full_unstemmed	Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.
title_sort	cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during eeg.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/15685b3f68ef47b08fb8c3557ad2e7b8
work_keys_str_mv	AT markusjvanackeren crossmodalintegrationoflexicalsemanticfeaturesduringwordprocessingevidencefromoscillatorydynamicsduringeeg AT shirleyannrueschemeyer crossmodalintegrationoflexicalsemanticfeaturesduringwordprocessingevidencefromoscillatorydynamicsduringeeg
_version_	1718414088772517888

Cross-modal integration of lexical-semantic features during word processing: evidence from oscillatory dynamics during EEG.

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