Audiovisual Processing of Chinese Characters Elicits Suppression and Congruency Effects in MEG

Frontiers in Human Neuroscience
Weiyong XuJarmo A Hämäläinen

Abstract

Learning to associate written letters/characters with speech sounds is crucial for reading acquisition. Most previous studies have focused on audiovisual integration in alphabetic languages. Less is known about logographic languages such as Chinese characters, which map onto mostly syllable-based morphemes in the spoken language. Here we investigated how long-term exposure to native language affects the underlying neural mechanisms of audiovisual integration in a logographic language using magnetoencephalography (MEG). MEG sensor and source data from 12 adult native Chinese speakers and a control group of 13 adult Finnish speakers were analyzed for audiovisual suppression (bimodal responses vs. sum of unimodal responses) and congruency (bimodal incongruent responses vs. bimodal congruent responses) effects. The suppressive integration effect was found in the left angular and supramarginal gyri (205-365 ms), left inferior frontal and left temporal cortices (575-800 ms) in the Chinese group. The Finnish group showed a distinct suppression effect only in the right parietal and occipital cortices at a relatively early time window (285-460 ms). The congruency effect was only observed in the Chinese group in left inferior frontal and...Continue Reading

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Citations

Jul 30, 2019·Frontiers in Human Neuroscience·Orsolya B KolozsváriJarmo A Hämäläinen
Jun 21, 2020·NeuroImage·Weiyong XuJarmo Arvid Hämäläinen
Dec 7, 2021·Frontiers in Psychology·Iliana I KaripidisSilvia Brem
Jan 16, 2022·The European Journal of Neuroscience·Zhichao XiaXiangping Liu

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