Fast dynamics of cortical functional and effective connectivity during word reading.

We describe for the first time the fast dynamics of functional and effective (causal) connectivity during word reading. Independent component analysis of high-density EEG recorded during a word reading task recovered multiple sources of electrical brain activity previously identified by fMRI and PET...

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Autores principales:	Nicolas Bedo, Urs Ribary, Lawrence M Ward
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/939b737cc70e4823b411ae6122e6410d
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spelling	oai:doaj.org-article:939b737cc70e4823b411ae6122e6410d2021-11-18T08:32:25ZFast dynamics of cortical functional and effective connectivity during word reading.1932-620310.1371/journal.pone.0088940https://doaj.org/article/939b737cc70e4823b411ae6122e6410d2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24551193/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203We describe for the first time the fast dynamics of functional and effective (causal) connectivity during word reading. Independent component analysis of high-density EEG recorded during a word reading task recovered multiple sources of electrical brain activity previously identified by fMRI and PET. Results confirmed the ventral occipito-temporal cortex (vOT) as a central hub for word reading, showing a progression of theta-band (3-7 Hz) and gamma-band (30-50 Hz) phase synchronization and directed theta-band and gamma-band information flow with both early visual areas and high-level language-processing areas. These results highlight the interplay between local and long-distance neural dynamics involved at each stage of the reading process. Moreover, these measures of functional and causal connectivity dynamics may be used as a benchmark for comparison with clinical populations (e.g. individuals with developmental dyslexia), such that disturbances in connectivity dynamics may provide insight as to underlying neurological problems with language processing, and their potential remediation.Nicolas BedoUrs RibaryLawrence M WardPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e88940 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicolas Bedo Urs Ribary Lawrence M Ward Fast dynamics of cortical functional and effective connectivity during word reading.
description	We describe for the first time the fast dynamics of functional and effective (causal) connectivity during word reading. Independent component analysis of high-density EEG recorded during a word reading task recovered multiple sources of electrical brain activity previously identified by fMRI and PET. Results confirmed the ventral occipito-temporal cortex (vOT) as a central hub for word reading, showing a progression of theta-band (3-7 Hz) and gamma-band (30-50 Hz) phase synchronization and directed theta-band and gamma-band information flow with both early visual areas and high-level language-processing areas. These results highlight the interplay between local and long-distance neural dynamics involved at each stage of the reading process. Moreover, these measures of functional and causal connectivity dynamics may be used as a benchmark for comparison with clinical populations (e.g. individuals with developmental dyslexia), such that disturbances in connectivity dynamics may provide insight as to underlying neurological problems with language processing, and their potential remediation.
format	article
author	Nicolas Bedo Urs Ribary Lawrence M Ward
author_facet	Nicolas Bedo Urs Ribary Lawrence M Ward
author_sort	Nicolas Bedo
title	Fast dynamics of cortical functional and effective connectivity during word reading.
title_short	Fast dynamics of cortical functional and effective connectivity during word reading.
title_full	Fast dynamics of cortical functional and effective connectivity during word reading.
title_fullStr	Fast dynamics of cortical functional and effective connectivity during word reading.
title_full_unstemmed	Fast dynamics of cortical functional and effective connectivity during word reading.
title_sort	fast dynamics of cortical functional and effective connectivity during word reading.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/939b737cc70e4823b411ae6122e6410d
work_keys_str_mv	AT nicolasbedo fastdynamicsofcorticalfunctionalandeffectiveconnectivityduringwordreading AT ursribary fastdynamicsofcorticalfunctionalandeffectiveconnectivityduringwordreading AT lawrencemward fastdynamicsofcorticalfunctionalandeffectiveconnectivityduringwordreading
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Fast dynamics of cortical functional and effective connectivity during word reading.

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