Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers

Detalhes bibliográficos
Autor(a) principal: Araújo, Susana
Data de Publicação: 2015
Outros Autores: Faisca, Luis, Bramao, Ines, Reis, Alexandra, Petersson, Karl Magnus
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/11278
Resumo: This ERP study investigated the cognitive nature of the P1-N1 components during orthographic processing. We used an implicit reading task with various types of stimuli involving different amounts of sublexical or lexical orthographic processing (words, pseudohomophones, pseudowords, nonwords, and symbols), and tested average and dyslexic readers. An orthographic regularity effect (pseudo-words-nonwords contrast) was observed in the average but not in the dyslexic group. This suggests an early sensitivity to the dependencies among letters in word-forms that reflect orthographic structure, while the dyslexic brain apparently fails to be appropriately sensitive to these complex features. Moreover, in the adults the N1-response may already reflect lexical access: (i) the N1 was sensitive to the familiar vs. less familiar orthographic sequence contrast; (ii) and early effects of the phonological form (words-pseudohomophones contrast) were also found. Finally, the later N320 component was attenuated in the dyslexics, suggesting suboptimal processing in later stages of phonological analysis. (C) 2014 Elsevier Inc. All rights reserved.
id RCAP_26f802adb607b5ed75b74853a0dacf3f
oai_identifier_str oai:sapientia.ualg.pt:10400.1/11278
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readersEvent-related potentialsVisual word recognitionDual-route perspectiveTime-courseDevelopmental dyslexiaBrain potentialsLetter-stringsPhonological representationsRegular orthographyRegression-analysisThis ERP study investigated the cognitive nature of the P1-N1 components during orthographic processing. We used an implicit reading task with various types of stimuli involving different amounts of sublexical or lexical orthographic processing (words, pseudohomophones, pseudowords, nonwords, and symbols), and tested average and dyslexic readers. An orthographic regularity effect (pseudo-words-nonwords contrast) was observed in the average but not in the dyslexic group. This suggests an early sensitivity to the dependencies among letters in word-forms that reflect orthographic structure, while the dyslexic brain apparently fails to be appropriately sensitive to these complex features. Moreover, in the adults the N1-response may already reflect lexical access: (i) the N1 was sensitive to the familiar vs. less familiar orthographic sequence contrast; (ii) and early effects of the phonological form (words-pseudohomophones contrast) were also found. Finally, the later N320 component was attenuated in the dyslexics, suggesting suboptimal processing in later stages of phonological analysis. (C) 2014 Elsevier Inc. All rights reserved.national Portuguese through FCT - Fundacao para a Ciencia e Tecnologia [SFRH/BPD/72974/2010, PTDC/PSI/110734/2009, PEst-OE/EQB/LA0023/2013]; Max Planck Institute for Psycholinguistics; Donders Institute for Brain, Cognition and Behaviour; Rad-boud University Nijmegen; Swedish Dyslexia FoundationAcademic Press Inc Elsevier ScienceSapientiaAraújo, SusanaFaisca, LuisBramao, InesReis, AlexandraPetersson, Karl Magnus2018-12-07T14:52:57Z2015-022015-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11278eng0093-934X10.1016/j.bandl.2014.11.007info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:23:02Zoai:sapientia.ualg.pt:10400.1/11278Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:02:48.356529Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
title Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
spellingShingle Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
Araújo, Susana
Event-related potentials
Visual word recognition
Dual-route perspective
Time-course
Developmental dyslexia
Brain potentials
Letter-strings
Phonological representations
Regular orthography
Regression-analysis
title_short Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
title_full Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
title_fullStr Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
title_full_unstemmed Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
title_sort Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
author Araújo, Susana
author_facet Araújo, Susana
Faisca, Luis
Bramao, Ines
Reis, Alexandra
Petersson, Karl Magnus
author_role author
author2 Faisca, Luis
Bramao, Ines
Reis, Alexandra
Petersson, Karl Magnus
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Araújo, Susana
Faisca, Luis
Bramao, Ines
Reis, Alexandra
Petersson, Karl Magnus
dc.subject.por.fl_str_mv Event-related potentials
Visual word recognition
Dual-route perspective
Time-course
Developmental dyslexia
Brain potentials
Letter-strings
Phonological representations
Regular orthography
Regression-analysis
topic Event-related potentials
Visual word recognition
Dual-route perspective
Time-course
Developmental dyslexia
Brain potentials
Letter-strings
Phonological representations
Regular orthography
Regression-analysis
description This ERP study investigated the cognitive nature of the P1-N1 components during orthographic processing. We used an implicit reading task with various types of stimuli involving different amounts of sublexical or lexical orthographic processing (words, pseudohomophones, pseudowords, nonwords, and symbols), and tested average and dyslexic readers. An orthographic regularity effect (pseudo-words-nonwords contrast) was observed in the average but not in the dyslexic group. This suggests an early sensitivity to the dependencies among letters in word-forms that reflect orthographic structure, while the dyslexic brain apparently fails to be appropriately sensitive to these complex features. Moreover, in the adults the N1-response may already reflect lexical access: (i) the N1 was sensitive to the familiar vs. less familiar orthographic sequence contrast; (ii) and early effects of the phonological form (words-pseudohomophones contrast) were also found. Finally, the later N320 component was attenuated in the dyslexics, suggesting suboptimal processing in later stages of phonological analysis. (C) 2014 Elsevier Inc. All rights reserved.
publishDate 2015
dc.date.none.fl_str_mv 2015-02
2015-02-01T00:00:00Z
2018-12-07T14:52:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/11278
url http://hdl.handle.net/10400.1/11278
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0093-934X
10.1016/j.bandl.2014.11.007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Academic Press Inc Elsevier Science
publisher.none.fl_str_mv Academic Press Inc Elsevier Science
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133262454456320