Lexical and sublexical orthographic processing: An ERP study with skilled and dyslexic adult readers
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
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. |
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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 |
|
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1799133262454456320 |