Cargando…

Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation

The Arabic alphabetical orthographic system has various unique features that include the existence of emphatic phonemic letters. These represent several pairs of letters that share a phonological similarity and use the same parts of the articulation system. The phonological and articulatory similari...

Descripción completa

Detalles Bibliográficos
Autores principales: Taha, Haitham, Khateb, Asaid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845210/
https://www.ncbi.nlm.nih.gov/pubmed/24348367
http://dx.doi.org/10.3389/fnhum.2013.00821
_version_ 1782293288660762624
author Taha, Haitham
Khateb, Asaid
author_facet Taha, Haitham
Khateb, Asaid
author_sort Taha, Haitham
collection PubMed
description The Arabic alphabetical orthographic system has various unique features that include the existence of emphatic phonemic letters. These represent several pairs of letters that share a phonological similarity and use the same parts of the articulation system. The phonological and articulatory similarities between these letters lead to spelling errors where the subject tends to produce a pseudohomophone (PHw) instead of the correct word. Here, we investigated whether or not the unique orthographic features of the written Arabic words modulate early orthographic processes. For this purpose, we analyzed event-related potentials (ERPs) collected from adult skilled readers during an orthographic decision task on real words and their corresponding PHw. The subjects' reaction times (RTs) were faster in words than in PHw. ERPs analysis revealed significant response differences between words and the PHw starting during the N170 and extending to the P2 component, with no difference during processing steps devoted to phonological and lexico-semantic processing. Amplitude and latency differences were found also during the P6 component which peaked earlier for words and where source localization indicated the involvement of the classical left language areas. Our findings replicate some of the previous findings on PHw processing and extend them to involve early orthographical processes.
format Online
Article
Text
id pubmed-3845210
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-38452102013-12-13 Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation Taha, Haitham Khateb, Asaid Front Hum Neurosci Neuroscience The Arabic alphabetical orthographic system has various unique features that include the existence of emphatic phonemic letters. These represent several pairs of letters that share a phonological similarity and use the same parts of the articulation system. The phonological and articulatory similarities between these letters lead to spelling errors where the subject tends to produce a pseudohomophone (PHw) instead of the correct word. Here, we investigated whether or not the unique orthographic features of the written Arabic words modulate early orthographic processes. For this purpose, we analyzed event-related potentials (ERPs) collected from adult skilled readers during an orthographic decision task on real words and their corresponding PHw. The subjects' reaction times (RTs) were faster in words than in PHw. ERPs analysis revealed significant response differences between words and the PHw starting during the N170 and extending to the P2 component, with no difference during processing steps devoted to phonological and lexico-semantic processing. Amplitude and latency differences were found also during the P6 component which peaked earlier for words and where source localization indicated the involvement of the classical left language areas. Our findings replicate some of the previous findings on PHw processing and extend them to involve early orthographical processes. Frontiers Media S.A. 2013-12-02 /pmc/articles/PMC3845210/ /pubmed/24348367 http://dx.doi.org/10.3389/fnhum.2013.00821 Text en Copyright © 2013 Taha and Khateb. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Taha, Haitham
Khateb, Asaid
Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation
title Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation
title_full Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation
title_fullStr Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation
title_full_unstemmed Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation
title_short Resolving the orthographic ambiguity during visual word recognition in Arabic: an event-related potential investigation
title_sort resolving the orthographic ambiguity during visual word recognition in arabic: an event-related potential investigation
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3845210/
https://www.ncbi.nlm.nih.gov/pubmed/24348367
http://dx.doi.org/10.3389/fnhum.2013.00821
work_keys_str_mv AT tahahaitham resolvingtheorthographicambiguityduringvisualwordrecognitioninarabicaneventrelatedpotentialinvestigation
AT khatebasaid resolvingtheorthographicambiguityduringvisualwordrecognitioninarabicaneventrelatedpotentialinvestigation