Human Brain Mapping of Visual Script Familiarity between Phonological and Logographic Language: 3 T Functional MRI Study

Author:

Kim Nambeom1ORCID,Kim Jongho2,Kang Chang-Ki13ORCID,Park Chan-A4ORCID,Lim Mi-Ra5,Kim Young-Bo16ORCID,Bak Byung-Gee7ORCID

Affiliation:

1. Neuroscience Research Institute, Gachon University, Incheon, Republic of Korea

2. Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA

3. Department of Radiological Science, College of Health Science, Gachon University, Incheon, Republic of Korea

4. Bioimaging Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute, Ochang, Cheongju, Republic of Korea

5. Department of General Education, Ajou University, Seoul, Republic of Korea

6. Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Republic of Korea

7. Department of Education, Chonbuk National University, Jeonju, Republic of Korea

Abstract

Neurolinguistic circuitry for two different scripts of language, such as phonological scripts (PhonoS) versus logographic scripts (LogoS) (e.g., English versus Chinese, resp.), recruits segregated neural pathways according to orthographic regularity (OrthoR). The purpose of this study was to identify the effect of VSF for cortical representation according to different OrthoR to represent Hangul versus Hanja as PhonoS versus LogoS, respectively. A total of 24 right-handed, native Korean undergraduate students with the first language of PhonoS and the second language of LogoS were divided into high- or low-competent groups for L2 of LogoS. The implicit word reading task was performed using Hanja and Hangul scripts during functional magnetic resonance imaging (fMRI) acquisition. Fluctuations of fMRI BOLD signal demonstrated that the LogoS was associated with the ventral pathway, whereas PhonoS was associated with the dorsal pathway. By interaction analysis, compared with high-competent group, low-competent group showed significantly greater activation for Hanja than for Hangul reading in the right superior parietal lobule area and the left supplementary motor area, which might be due to neural efficiency such as attention and cognition rather than core neurolinguistic neural demand like OrthoR processing.

Funder

National Research Foundation of Korea

Publisher

Hindawi Limited

Subject

General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine

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