Electrophysiological Evidence Reveals the Asymmetric Transfer from the Right to Left Hemisphere as Key to Reading Proficiency

Kim, Sangyub; Kim, Joonwoo; Nam, Kwanghee

doi:10.3390/brainsci13040621

Cited by 4 publications

(1 citation statement)

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“…Additionally, due to the greater availability of relevant lexical information in the left hemisphere compared to the right, the involvement of the right hemisphere in foveal word processing may necessitate more resources than relying on the left hemisphere's strategy. In this regard, Kim et al (2023) offer electrophysiological evidence supporting superior facilitation from the right to the left hemisphere during more familiar word recognition at foveal vision, which may lead to left-lateralization for efficient foveal word processing. Furthermore, parafoveal studies have shown that word processing operates cooperatively between the two hemispheres to achieve efficient processing by modulating word familiarity (Kim et al, 2022) and semantic information of words (Perrone-Bertolotti et al, 2013) with the significant RVFA.…”

Section: Why Task Demand Matters In Lexical Decision and Its Relation...mentioning

confidence: 89%

Examining interhemispheric processing and task demand in lexical decision-making: insights from lateralized visual field paradigm

Kim

Nam

2023

Front. Psychol.

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This study aimed to investigate the influence of task demand on the uni−/bi-hemispheric processing of lexical decision-making. Two types of nonwords were used in parafoveal and foveal lexical decision tasks (LDTs) to manipulate task demand. In Experiment 1, a visual half-field paradigm was utilized to evaluate the unihemispheric strategy in lexical decision, which revealed a significant response bias toward “word” at the RVF/LH in the pseudoword LDT in contrast with the nonword LDT, indicating the strategic use of orthographical legality in LH for word-pseudoword lexical decision. In Experiment 2, the study evaluated whether foveal lexical decision follows the orthographical legality strategy of LH in pseudoword LDT relative to the nonword LDT. The results showed a response bias toward “word” in the foveal pseudoword LDT in contrast with the foveal nonword LDT, suggesting the recruitment of LH in foveal pseudoword LDT. These findings support the left-dominant bihemispheric processing in foveal lexical decision and contribute to our understanding of the mechanisms underlying lexical decision-making.

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Section: Why Task Demand Matters In Lexical Decision and Its Relation...mentioning

confidence: 89%

Examining interhemispheric processing and task demand in lexical decision-making: insights from lateralized visual field paradigm

Kim

Nam

2023

Front. Psychol.

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The effectiveness of a reading and cognitive task-based Web delivered intervention program for children with reading difficulties

Striftou,

Zygouris,

Vlachos

et al. 2024

Applied Neuropsychology: Child

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Contributions of hemispheric dynamics in visual word recognition: uncovering familiarity effects through lateralized priming

Kim,

Nam

2024

Front. Psychol.

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IntroductionThis investigation aimed to explore interhemispheric interactions in visual word processing with a focus on proficiency development. Given the asymmetrical specialization in visual word processing across hemispheres, the study hypothesized that the primary hemisphere predominantly regulates interhemispheric interactions. The familiarity effect, serving as a measure of visual word processing proficiency, was examined to determine how proficiency influences these interactions.MethodsA primed-lateralized lexical decision task with a stimulus onset asynchrony (SOA) of 100 ms was employed. The task involved presenting primes and targets in parafoveal visual fields (left visual field/right visual field) to assess behavioral responses. By manipulating prime and target visual field locations, the study aimed to evaluate both inter- and intrahemispheric interactions during visual word processing.ResultsThe findings revealed a significant interhemispheric familiarity effect in response times when the left visual field (LVF)/right hemisphere (RH) served as the prime and the right visual field (RVF)/left hemisphere (LH) as the target. Additionally, a significant intrahemispheric familiarity effect was observed within the LVF/RH condition, suggesting a prominent role of the RH in visual-perceptual processing during the development of visual word recognition proficiency.DiscussionThese results provide compelling evidence for asymmetric specialization between the hemispheres in visual word processing. The significant inter- and intrahemispheric familiarity effects underscore the importance of RH visual-perceptual processing in proficiency development. These insights enhance our understanding of interhemispheric dynamics in the evolution of visual word recognition proficiency, highlighting the complex coordination between hemispheres in facilitating fluent visual word processing.

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Electrophysiological Evidence Reveals the Asymmetric Transfer from the Right to Left Hemisphere as Key to Reading Proficiency

Cited by 4 publications

References 56 publications

Examining interhemispheric processing and task demand in lexical decision-making: insights from lateralized visual field paradigm

Examining interhemispheric processing and task demand in lexical decision-making: insights from lateralized visual field paradigm

The effectiveness of a reading and cognitive task-based Web delivered intervention program for children with reading difficulties

Contributions of hemispheric dynamics in visual word recognition: uncovering familiarity effects through lateralized priming

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