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Hemispheric contributions to semantic processing in adult dyslexic readers: A divided visual field semantic priming and ERP study.

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Τίτλος: Hemispheric contributions to semantic processing in adult dyslexic readers: A divided visual field semantic priming and ERP study.
Συγγραφείς: Bechler-Sivan I; The Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Israel; Department of Learning Disabilities, Faculty of Education, University of Haifa, Israel., Menashe S; The Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Israel. Electronic address: menashe_shay@yahoo.com., Shaul S; The Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Israel; Department of Learning Disabilities, Faculty of Education, University of Haifa, Israel.
Πηγή: Biological psychology [Biol Psychol] 2026 Oct; Vol. 210, pp. 109349. Date of Electronic Publication: 2026 Jul 21.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Elsevier Science B.V Country of Publication: Netherlands NLM ID: 0375566 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-6246 (Electronic) Linking ISSN: 03010511 NLM ISO Abbreviation: Biol Psychol Subsets: MEDLINE
Imprint Name(s): Publication: Amsterdam : Elsevier Science B.V
Original Publication: Amsterdam, North-Holland.
Ιατρικοί όροι (MeSH): Dyslexia*/physiopathology , Functional Laterality*/physiology , Evoked Potentials*/physiology , Visual Fields*/physiology , Semantics* , Reading*, Reaction Time/physiology ; Humans ; Female ; Electroencephalography ; Male ; Adult ; Young Adult ; Photic Stimulation ; Analysis of Variance
Περίληψη: The reported study employed a divided visual field priming paradigm and event-related potential (ERP) to investigate hemispheric contributions to semantic processing in adult dyslexic readers. Twenty-six nonimpaired and 24 dyslexic readers were asked to decide if a target word, which was unilaterally presented, was unrelated or related to the preceding centrally presented prime word. The behavioral results revealed no accuracy difference between the groups for the unrelated words. However, related words produced higher accuracy in the nonimpaired group compared to the dyslexic readers. In addition, the nonimpaired readers had overall shorter reaction time than the dyslexic readers. Moreover, the N400 results showed that while the nonimpaired readers had no differences between the related and unrelated pairs over the left hemisphere (LH), the dyslexic readers showed a more negative response for the unrelated compared to the related pairs. Over the right hemisphere (RH), unrelated pairs produced more negativity than related pairs for both nonimpaired and dyslexic readers. In addition, while the unrelated words produced no lateralization effects, related words produced more negativity over the LH than the RH in the nonimpaired readers group, while no differences between the hemispheres were found in the dyslexic readers. The P600 results revealed that the nonimpaired readers produced overall more positive response over the lateral sites compared to the dyslexic readers. The behavioral and ERP findings suggest differences in semantic processing and hemispheric modulation in adult dyslexic readers relative to nonimpaired readers.
(Copyright © 2026 The Authors. Published by Elsevier B.V. All rights reserved.)
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Contributed Indexing: Keywords: Dyslexia; ERP; Hemispheres; N400; P600; Semantic priming
Entry Date(s): Date Created: 20260721 Date Completed: 20260919 Latest Revision: 20260919
Update Code: 20260920
DOI: 10.1016/j.biopsycho.2026.109349
PMID: 42480693
Βάση Δεδομένων: MEDLINE
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  Data: Hemispheric contributions to semantic processing in adult dyslexic readers: A divided visual field semantic priming and ERP study.
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  Data: <searchLink fieldCode="AU" term="%22Bechler-Sivan+I%22">Bechler-Sivan I</searchLink>; The Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Israel; Department of Learning Disabilities, Faculty of Education, University of Haifa, Israel.<br /><searchLink fieldCode="AU" term="%22Menashe+S%22">Menashe S</searchLink>; The Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Israel. Electronic address: menashe_shay@yahoo.com.<br /><searchLink fieldCode="AU" term="%22Shaul+S%22">Shaul S</searchLink>; The Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Israel; Department of Learning Disabilities, Faculty of Education, University of Haifa, Israel.
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  Data: <searchLink fieldCode="JN" term="%220375566%22">Biological psychology</searchLink> [Biol Psychol] 2026 Oct; Vol. 210, pp. 109349. <i>Date of Electronic Publication: </i>2026 Jul 21.
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  Data: <i>Publication</i>: Amsterdam : Elsevier Science B.V<br /><i>Original Publication</i>: Amsterdam, North-Holland.
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  Data: <searchLink fieldCode="MM" term="%22Dyslexia%22">Dyslexia*</searchLink>/<searchLink fieldCode="MM" term="%22Dyslexia+physiopathology%22">physiopathology</searchLink> <br /><searchLink fieldCode="MM" term="%22Functional+Laterality%22">Functional Laterality*</searchLink>/<searchLink fieldCode="MM" term="%22Functional+Laterality+physiology%22">physiology</searchLink> <br /><searchLink fieldCode="MM" term="%22Evoked+Potentials%22">Evoked Potentials*</searchLink>/<searchLink fieldCode="MM" term="%22Evoked+Potentials+physiology%22">physiology</searchLink> <br /><searchLink fieldCode="MM" term="%22Visual+Fields%22">Visual Fields*</searchLink>/<searchLink fieldCode="MM" term="%22Visual+Fields+physiology%22">physiology</searchLink> <br /><searchLink fieldCode="MM" term="%22Semantics%22">Semantics*</searchLink> <br /><searchLink fieldCode="MM" term="%22Reading%22">Reading*</searchLink><br /><searchLink fieldCode="MH" term="%22Reaction+Time%22">Reaction Time</searchLink>/<searchLink fieldCode="MH" term="%22Reaction+Time+physiology%22">physiology</searchLink> ; <searchLink fieldCode="MH" term="%22Humans%22">Humans</searchLink> ; <searchLink fieldCode="MH" term="%22Female%22">Female</searchLink> ; <searchLink fieldCode="MH" term="%22Electroencephalography%22">Electroencephalography</searchLink> ; <searchLink fieldCode="MH" term="%22Male%22">Male</searchLink> ; <searchLink fieldCode="MH" term="%22Adult%22">Adult</searchLink> ; <searchLink fieldCode="MH" term="%22Young+Adult%22">Young Adult</searchLink> ; <searchLink fieldCode="MH" term="%22Photic+Stimulation%22">Photic Stimulation</searchLink> ; <searchLink fieldCode="MH" term="%22Analysis+of+Variance%22">Analysis of Variance</searchLink>
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  Data: The reported study employed a divided visual field priming paradigm and event-related potential (ERP) to investigate hemispheric contributions to semantic processing in adult dyslexic readers. Twenty-six nonimpaired and 24 dyslexic readers were asked to decide if a target word, which was unilaterally presented, was unrelated or related to the preceding centrally presented prime word. The behavioral results revealed no accuracy difference between the groups for the unrelated words. However, related words produced higher accuracy in the nonimpaired group compared to the dyslexic readers. In addition, the nonimpaired readers had overall shorter reaction time than the dyslexic readers. Moreover, the N400 results showed that while the nonimpaired readers had no differences between the related and unrelated pairs over the left hemisphere (LH), the dyslexic readers showed a more negative response for the unrelated compared to the related pairs. Over the right hemisphere (RH), unrelated pairs produced more negativity than related pairs for both nonimpaired and dyslexic readers. In addition, while the unrelated words produced no lateralization effects, related words produced more negativity over the LH than the RH in the nonimpaired readers group, while no differences between the hemispheres were found in the dyslexic readers. The P600 results revealed that the nonimpaired readers produced overall more positive response over the lateral sites compared to the dyslexic readers. The behavioral and ERP findings suggest differences in semantic processing and hemispheric modulation in adult dyslexic readers relative to nonimpaired readers.<br /> (Copyright © 2026 The Authors. Published by Elsevier B.V. All rights reserved.)
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  Data: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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  Data: <i>Keywords: </i>Dyslexia; ERP; Hemispheres; N400; P600; Semantic priming
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  Data: 42480693
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