ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia
Automatic visual word recognition requires not only well-established phonological and orthographic representations but also efficient audio-visual integration of these representations. One possibility is that in developmental dyslexia, inefficient orthographic processing might underlie poor reading....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-10-01
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| Series: | Frontiers in Psychology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpsyg.2021.723404/full |
| _version_ | 1818729157655265280 |
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| author | Vera Varga Vera Varga Dénes Tóth Kathleen Kay Amora Kathleen Kay Amora Dávid Czikora Valéria Csépe Valéria Csépe |
| author_facet | Vera Varga Vera Varga Dénes Tóth Kathleen Kay Amora Kathleen Kay Amora Dávid Czikora Valéria Csépe Valéria Csépe |
| author_sort | Vera Varga |
| collection | DOAJ |
| description | Automatic visual word recognition requires not only well-established phonological and orthographic representations but also efficient audio-visual integration of these representations. One possibility is that in developmental dyslexia, inefficient orthographic processing might underlie poor reading. Alternatively, reading deficit could be due to inefficient phonological processing or inefficient integration of orthographic and phonological information. In this event-related potential study, participants with dyslexia (N = 25) and control readers (N = 27) were presented with pairs of words and pseudowords in an implicit same-different task. The reference-target pairs could be identical, or different in the identity or the position of the letters. To test the orthographic-phonological processing, target stimuli were presented in visual-only and audiovisual conditions. Participants with and without dyslexia processed the reference stimuli similarly; however, group differences emerged in the processing of target stimuli, especially in the audiovisual condition where control readers showed greater N1 responses for words than for pseudowords, but readers with dyslexia did not show such difference. Moreover, after 300 ms lexicality effect exhibited a more focused frontal topographic distribution in readers with dyslexia. Our results suggest that in developmental dyslexia, phonological processing and audiovisual processing deficits are more pronounced than orthographic processing deficits. |
| first_indexed | 2024-12-17T22:41:26Z |
| format | Article |
| id | doaj.art-13e0a7600db3486b92ad1c5d5daa7aa7 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-17T22:41:26Z |
| publishDate | 2021-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-13e0a7600db3486b92ad1c5d5daa7aa72022-12-21T21:29:55ZengFrontiers Media S.A.Frontiers in Psychology1664-10782021-10-011210.3389/fpsyg.2021.723404723404ERP Correlates of Altered Orthographic-Phonological Processing in DyslexiaVera Varga0Vera Varga1Dénes Tóth2Kathleen Kay Amora3Kathleen Kay Amora4Dávid Czikora5Valéria Csépe6Valéria Csépe7Brain Imaging Centre, Research Centre for Natural Sciences, Budapest, HungaryDepartment of Cognitive Science, Budapest University of Technology and Economics, Budapest, HungaryBrain Imaging Centre, Research Centre for Natural Sciences, Budapest, HungaryBrain Imaging Centre, Research Centre for Natural Sciences, Budapest, HungaryMultilingualism Doctoral School, Faculty of Modern Philology and Social Sciences, University of Pannonia, Veszprém, HungaryBrain Imaging Centre, Research Centre for Natural Sciences, Budapest, HungaryBrain Imaging Centre, Research Centre for Natural Sciences, Budapest, HungaryInstitute for Hungarian and Applied Linguistics, Pannon University, Veszprém, HungaryAutomatic visual word recognition requires not only well-established phonological and orthographic representations but also efficient audio-visual integration of these representations. One possibility is that in developmental dyslexia, inefficient orthographic processing might underlie poor reading. Alternatively, reading deficit could be due to inefficient phonological processing or inefficient integration of orthographic and phonological information. In this event-related potential study, participants with dyslexia (N = 25) and control readers (N = 27) were presented with pairs of words and pseudowords in an implicit same-different task. The reference-target pairs could be identical, or different in the identity or the position of the letters. To test the orthographic-phonological processing, target stimuli were presented in visual-only and audiovisual conditions. Participants with and without dyslexia processed the reference stimuli similarly; however, group differences emerged in the processing of target stimuli, especially in the audiovisual condition where control readers showed greater N1 responses for words than for pseudowords, but readers with dyslexia did not show such difference. Moreover, after 300 ms lexicality effect exhibited a more focused frontal topographic distribution in readers with dyslexia. Our results suggest that in developmental dyslexia, phonological processing and audiovisual processing deficits are more pronounced than orthographic processing deficits.https://www.frontiersin.org/articles/10.3389/fpsyg.2021.723404/fulldyslexiaN170 effectposition codingERPaudiovisual processingprint sensitivity |
| spellingShingle | Vera Varga Vera Varga Dénes Tóth Kathleen Kay Amora Kathleen Kay Amora Dávid Czikora Valéria Csépe Valéria Csépe ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia Frontiers in Psychology dyslexia N170 effect position coding ERP audiovisual processing print sensitivity |
| title | ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia |
| title_full | ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia |
| title_fullStr | ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia |
| title_full_unstemmed | ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia |
| title_short | ERP Correlates of Altered Orthographic-Phonological Processing in Dyslexia |
| title_sort | erp correlates of altered orthographic phonological processing in dyslexia |
| topic | dyslexia N170 effect position coding ERP audiovisual processing print sensitivity |
| url | https://www.frontiersin.org/articles/10.3389/fpsyg.2021.723404/full |
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