ORIGINAL RESEARCH article
Front. Psychol.
Sec. Psychology of Language
Volume 16 - 2025 | doi: 10.3389/fpsyg.2025.1553708
Temporal Dynamics of Hemispheric Interactions in Visual Word Recognition Using a Repetition Priming Paradigm: Modulation by Stimulus Onset Asynchrony
Provisionally accepted
- 1Chonnam National University, Gwangju, Gwangju, Republic of Korea
- 2Korea University, Seoul, Republic of Korea
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This study investigates how interhemispheric interactions shape visual word recognition, focusing on the modulatory role of stimulus onset asynchrony (SOA) between prime and target presentations in a primed-lateralized lexical decision task.Repetition priming effects were examined as a function of prime-target visual field pairings and SOA, to examine the spatiotemporal dynamics of hemispheric processing.To avoid ambiguity stemming from dual grammatical roles, only nouns were included as stimuli. Using word familiarity as an index of lexical proficiency, we observed distinct hemispheric contributions at two critical SOA intervals. At 100 ms, left visual field (LVF) primes followed by right visual field (RVF) targets revealed a dominant influence of the right hemisphere's visual-perceptual specialization. At 200 ms, RVF primes preceding LVF targets indicated a stronger role of the left hemisphere's lexical processing in interhemispheric transfer. These findings suggest the importance of temporal coordination between hemispheres and demonstrate that the nature of hemispheric specialization in visual word recognition is contingent on the timing of interhemispheric activation.
Keywords: Interhemispheric interaction, visual word recognition, stimulus onset asynchrony (SOA), hemispheric specialization, Lexical decision task (LDT) Interhemispheric interaction, Lexical decision task (LDT)
Received: 31 Dec 2024; Accepted: 09 Jul 2025.
Copyright: © 2025 Kim and Nam. 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.
* Correspondence: Kichun Nam, Korea University, Seoul, 136-701, Republic of Korea
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