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Lin Z, Li X, Qi G, Yang J, Sun H, Guo Q, Wu J, Xu M. Phonological properties of logographic words modulate brain activation in bilinguals: a comparative study of Chinese characters and Japanese Kanji. Cereb Cortex 2024; 34:bhae150. [PMID: 38652552 PMCID: PMC11037275 DOI: 10.1093/cercor/bhae150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/25/2024] Open
Abstract
The brain networks for the first (L1) and second (L2) languages are dynamically formed in the bilingual brain. This study delves into the neural mechanisms associated with logographic-logographic bilingualism, where both languages employ visually complex and conceptually rich logographic scripts. Using functional Magnetic Resonance Imaging, we examined the brain activity of Chinese-Japanese bilinguals and Japanese-Chinese bilinguals as they engaged in rhyming tasks with Chinese characters and Japanese Kanji. Results showed that Japanese-Chinese bilinguals processed both languages using common brain areas, demonstrating an assimilation pattern, whereas Chinese-Japanese bilinguals recruited additional neural regions in the left lateral prefrontal cortex for processing Japanese Kanji, reflecting their accommodation to the higher phonological complexity of L2. In addition, Japanese speakers relied more on the phonological processing route, while Chinese speakers favored visual form analysis for both languages, indicating differing neural strategy preferences between the 2 bilingual groups. Moreover, multivariate pattern analysis demonstrated that, despite the considerable neural overlap, each bilingual group formed distinguishable neural representations for each language. These findings highlight the brain's capacity for neural adaptability and specificity when processing complex logographic languages, enriching our understanding of the neural underpinnings supporting bilingual language processing.
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Affiliation(s)
- Zhenglong Lin
- School of Psychology, Shenzhen University, Nanhai Avenue 3688, Shenzhen 518060, Guangdong, China
| | - Xiujun Li
- School of Computer Science and Technology, Changchun University of Science and Technology, Weixing Road 7186, Changchun 130022, Jilin, China
| | - Geqi Qi
- Department of Psychology, College of Education Science, Inner Mongolia Normal University, West College Road 235, Huhhot 010021, Inner Mongolia, China
| | - Jiajia Yang
- Cognitive Neuroscience Laboratory, Graduate School of Natural Science and Technology, Okayama University, 2-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Hongzan Sun
- Department of Radiology, Shengjing Hospital of China Medical University, Sanhao Street 36, Shenyang 110055, Liaoning, China
| | - Qiyong Guo
- Department of Radiology, Shengjing Hospital of China Medical University, Sanhao Street 36, Shenyang 110055, Liaoning, China
| | - Jinglong Wu
- Cognitive Neuroscience Laboratory, Graduate School of Natural Science and Technology, Okayama University, 2-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
- Key Laboratory of Biomimetic Robots and System, Ministry of Education, State Key Laboratory of Intelligent Control and Decision of Complex Systems, Beijing Institute of Technology, Zhongguancun South Street No 5, Beijing 100811, China
| | - Min Xu
- School of Psychology, Shenzhen University, Nanhai Avenue 3688, Shenzhen 518060, Guangdong, China
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Lee CSC. Executive functions underlie word reading and reading fluency in Chinese children with attention deficit/hyperactivity disorder, reading disabilities, and comorbid attention deficit/hyperactivity disorder and reading disabilities. Child Neuropsychol 2024; 30:60-86. [PMID: 36794401 DOI: 10.1080/09297049.2023.2179981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 02/08/2023] [Indexed: 02/17/2023]
Abstract
The current study examined the executive function (EF) deficits and their roles in reading in one hundred and four Cantonese-speaking children with typical development, reading disabilities (RD), ADHD, and comorbid ADHD and RD (ADHD + RD). Children's EF and reading skills were measured. Analysis of variance results showed that all children with disorders manifested deficits in verbal and visuospatial short-term and working memory and behavioral inhibition. Moreover, children with ADHD and ADHD + RD also exhibited deficits in inhibition (IC and BI) and cognitive flexibility. These findings demonstrated that the EF deficits in Chinese children with RD, ADHD, and ADHD + RD are similar to those in their counterparts using alphabetic languages. However, children with ADHD + RD displayed more severe deficits in visuospatial working memory compared to children with RD and ADHD, which was inconsistent with that observed in children using alphabetic languages. Regression analysis results showed that verbal short-term memory was a significant predictor for both word reading and reading fluency in children with RD and ADHD + RD. Moreover, behavioral inhibition significantly predicted reading fluency in children with ADHD. These findings also agreed with previous studies. Collectively, the results of the current study showed that the EF deficits and their roles in reading found in Chinese children with RD, ADHD, and ADHD + RD are mainly consistent with children using alphabetic languages. However, more studies are still needed to confirm these findings, especially comparing the severity of working memory among these three disorders.
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Affiliation(s)
- Clara Shuk-Ching Lee
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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Bernstein LJ, Edelstein K, Sharma A, Alain C. Chemo-brain: An activation likelihood estimation meta-analysis of functional magnetic resonance imaging studies. Neurosci Biobehav Rev 2021; 130:314-325. [PMID: 34454915 DOI: 10.1016/j.neubiorev.2021.08.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 07/24/2021] [Accepted: 08/23/2021] [Indexed: 11/17/2022]
Abstract
Adults with non-central nervous system (CNS) cancers frequently report problems in attention, memory and executive function during or after chemotherapy, referred to as cancer-related cognitive dysfunction (CRCD). Despite numerous studies investigating CRCD, there is no consensus regarding the brain areas implicated. We sought to determine if there are brain areas that consistently show either hyper- or hypo-activation in people treated with chemotherapy for non-CNS cancer (Chemo+). Using activation likelihood estimation on brain coordinates from 14 fMRI studies yielding 25 contrasts from 375 Chemo+ and 429 chemotherapy-naive controls while they performed cognitive tasks, the meta-analysis yielded two significant clusters which are part of the frontoparietal attention network, both showing lower activation in Chemo+. One cluster peaked in the left superior parietal cortex, extending into precuneus, inferior parietal lobule, and angular gyrus. The other peaked in the right superior prefrontal areas, extending into inferior prefrontal cortex. We propose that these observed lower activations reflect a dysfunction in mobilizing and/or sustaining attention due to depletion of cognitive resources. This could explain higher level of mental fatigue reported by Chemo+ and why cancer survivors report problems in a wide variety of cognitive domains.
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Affiliation(s)
- Lori J Bernstein
- Department of Supportive Care, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Canada.
| | - Kim Edelstein
- Department of Supportive Care, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Canada
| | - Alisha Sharma
- Department of Supportive Care, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Claude Alain
- Rotman Research Institute, Baycrest Health Centre, Canada; Department of Psychology, University of Toronto, Canada
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Kim N, Kim J, Kang CK, Park CA, Lim MR, Kim YB, Bak BG. Human Brain Mapping of Visual Script Familiarity between Phonological and Logographic Language: 3 T Functional MRI Study. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5732642. [PMID: 28758118 PMCID: PMC5516734 DOI: 10.1155/2017/5732642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/20/2017] [Accepted: 04/23/2017] [Indexed: 11/17/2022]
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.
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Affiliation(s)
- Nambeom Kim
- Neuroscience Research Institute, Gachon University, Incheon, Republic of Korea
| | - Jongho Kim
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Chang-Ki Kang
- Neuroscience Research Institute, Gachon University, Incheon, Republic of Korea
- Department of Radiological Science, College of Health Science, Gachon University, Incheon, Republic of Korea
| | - Chan-A Park
- Bioimaging Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute, Ochang, Cheongju, Republic of Korea
| | - Mi-Ra Lim
- Department of General Education, Ajou University, Seoul, Republic of Korea
| | - Young-Bo Kim
- Neuroscience Research Institute, Gachon University, Incheon, Republic of Korea
- Department of Neurosurgery, Gachon University Gil Hospital, Incheon, Republic of Korea
| | - Byung-Gee Bak
- Department of Education, Chonbuk National University, Jeonju, Republic of Korea
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Wydell TN, Kondo T. Behavioral and Neuroimaging Research of Reading: a Case of Japanese. CURRENT DEVELOPMENTAL DISORDERS REPORTS 2015; 2:339-345. [PMID: 26543799 PMCID: PMC4624818 DOI: 10.1007/s40474-015-0066-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Behavioral studies showed that AS, an English-Japanese bilingual, was a skilled reader in Japanese but was a phonological dyslexic in English. This behavioral dissociation was accounted for by the Hypothesis of Transparency and Granularity postulated by Wydell and Butterworth. However, a neuroimaging study using magnetoencephalography (MEG) revealed that AS has the same functional deficit in the left superior temporal gyrus (STG). This paper therefore offers an answer to this intriguing discrepancy between the behavioral dissociation and the neural unity in AS by reviewing existing behavioral and neuroimaging studies in alphabetic languages such as English, Finnish, French, and Italian, and nonalphabetic languages such as Japanese and Chinese.
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Affiliation(s)
- Taeko N. Wydell
- />Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH UK
| | - Tadahisa Kondo
- />Faculty of Informatics, Kogakuin University, Tokyo, Japan
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McBride CA. Is Chinese Special? Four Aspects of Chinese Literacy Acquisition that Might Distinguish Learning Chinese from Learning Alphabetic Orthographies. EDUCATIONAL PSYCHOLOGY REVIEW 2015. [DOI: 10.1007/s10648-015-9318-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Koyama MS, Stein JF, Stoodley CJ, Hansen PC. A cross-linguistic evaluation of script-specific effects on fMRI lateralization in late second language readers. Front Hum Neurosci 2014; 8:249. [PMID: 24795604 PMCID: PMC4006067 DOI: 10.3389/fnhum.2014.00249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 04/04/2014] [Indexed: 11/20/2022] Open
Abstract
Behavioral and neuroimaging studies have provided evidence that reading is strongly left lateralized, and the degree of this pattern of functional lateralization can be indicative of reading competence. However, it remains unclear whether functional lateralization differs between the first (L1) and second (L2) languages in bilingual L2 readers. This question is particularly important when the particular script, or orthography, learned by the L2 readers is markedly different from their L1 script. In this study, we quantified functional lateralization in brain regions involved in visual word recognition for participants' L1 and L2 scripts, with a particular focus on the effects of L1–L2 script differences in the visual complexity and orthographic depth of the script. Two different groups of late L2 learners participated in an fMRI experiment using a visual one-back matching task: L1 readers of Japanese who learnt to read alphabetic English and L1 readers of English who learnt to read both Japanese syllabic Kana and logographic Kanji. The results showed weaker leftward lateralization in the posterior lateral occipital complex (pLOC) for logographic Kanji compared with syllabic and alphabetic scripts in both L1 and L2 readers of Kanji. When both L1 and L2 scripts were non-logographic, where symbols are mapped onto sounds, functional lateralization did not significantly differ between L1 and L2 scripts in any region, in any group. Our findings indicate that weaker leftward lateralization for logographic reading reflects greater requirement of the right hemisphere for processing visually complex logographic Kanji symbols, irrespective of whether Kanji is the readers' L1 or L2, rather than characterizing additional cognitive efforts of L2 readers. Finally, brain-behavior analysis revealed that functional lateralization for L2 visual word processing predicted L2 reading competency.
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Affiliation(s)
- Maki S Koyama
- Department of physiology, anatomy, and genetics, University of Oxford Oxford, UK ; Nathan Kline Institute for Psychiatric Research Orangeburg, NY, USA
| | - John F Stein
- Department of physiology, anatomy, and genetics, University of Oxford Oxford, UK
| | | | - Peter C Hansen
- School of Psychology, University of Birmingham Birmingham, UK
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Hori T, Sanjo N, Tomita M, Mizusawa H. Visual reproduction on the Wechsler Memory Scale-Revised as a predictor of Alzheimer's disease in Japanese patients with mild cognitive impairments. Dement Geriatr Cogn Disord 2013; 35:165-76. [PMID: 23406667 DOI: 10.1159/000346738] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/18/2012] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The Visual Reproduction (VR) test is used to assess mild cognitive impairment (MCI), but the characteristics of visual memory in Japanese MCI patients remain unclear. METHODS VR scores of 27 MCI patients were evaluated using the Wechsler Memory Scale-Revised. Scores of MCI, no-dementia, and Alzheimer's disease (AD) groups were then compared. RESULTS The annual conversion rate of MCI to AD was 18.8%. Mean VR-I and VR-II baseline scores for MCI patients were 33.3 ± 5.6 and 20.5 ± 14.0, respectively. Mean VR-II scores for converted and nonconverted MCI patients were 7.2 ± 8.7 and 29.8 ± 9.3, respectively. CONCLUSIONS It is likely that VR-II and VR-II/I scores are more sensitive for predicting conversion to AD in Japanese than in American MCI patients. Our results indicate that VR is a sensitive and useful measure for predicting the conversion of Japanese MCI patients to AD within 2 years.
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Affiliation(s)
- Takumi Hori
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, Japan
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Koyama MS, Stein JF, Stoodley CJ, Hansen PC. Cerebral mechanisms for different second language writing systems. Neuropsychologia 2013; 51:2261-70. [DOI: 10.1016/j.neuropsychologia.2013.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 07/22/2013] [Accepted: 08/01/2013] [Indexed: 11/29/2022]
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10
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Rai MK, Harris RJ. The Modified Brown-Peterson Task: A Tool to Directly Compare Children and Adult's Working Memory. The Journal of Genetic Psychology 2013; 174:153-69. [DOI: 10.1080/00221325.2011.653839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kawabata Duncan KJ, Twomey T, Parker Jones 'Ō, Seghier ML, Haji T, Sakai K, Price CJ, Devlin JT. Inter- and intrahemispheric connectivity differences when reading Japanese Kanji and Hiragana. Cereb Cortex 2013; 24:1601-8. [PMID: 23382515 PMCID: PMC4014181 DOI: 10.1093/cercor/bht015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Unlike most languages that are written using a single script, Japanese uses multiple scripts including morphographic Kanji and syllabographic Hiragana and Katakana. Here, we used functional magnetic resonance imaging with dynamic causal modeling to investigate competing theories regarding the neural processing of Kanji and Hiragana during a visual lexical decision task. First, a bilateral model investigated interhemispheric connectivity between ventral occipito–temporal (vOT) cortex and Broca's area (“pars opercularis”). We found that Kanji significantly increased the connection strength from right-to-left vOT. This is interpreted in terms of increased right vOT activity for visually complex Kanji being integrated into the left (i.e. language dominant) hemisphere. Secondly, we used a unilateral left hemisphere model to test whether Kanji and Hiragana rely preferentially on ventral and dorsal paths, respectively, that is, they have different intrahemispheric functional connectivity profiles. Consistent with this hypothesis, we found that Kanji increased connectivity within the ventral path (V1 ↔ vOT ↔ Broca's area), and that Hiragana increased connectivity within the dorsal path (V1 ↔ supramarginal gyrus ↔ Broca's area). Overall, the results illustrate how the differential processing demands of Kanji and Hiragana influence both inter- and intrahemispheric interactions.
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Abstract
Reading is a uniquely human task and therefore any sign of neuronal activation that is specific to reading is of considerable interest. One intriguing observation is that ventral occipitotemporal (vOT) activation is more strongly left lateralized for written words than other visual stimuli. This has contributed to claims that left vOT plays a special role in reading. Here, we investigated whether left lateralized vOT responses for words were the consequence of visual feature processing, visual word form selectivity, or higher level language processing. Using fMRI in 82 skilled readers, our paradigm compared activation and lateralization for words and nonlinguistic stimuli during different tasks. We found that increased left lateralization for words relative to pictures was the consequence of reduced activation in right vOT rather than increased activation in left vOT. We also found that the determinants of lateralization varied with the subregion of vOT tested. In posterior vOT, lateralization depended on the spatial frequency of the visual inputs. In anterior vOT, lateralization depended on the semantic demands of the task. In middle vOT, lateralization depended on a combination of visual expertise in the right hemisphere and semantics in the left hemisphere. These results have implications for interpreting left lateralized vOT activation during reading. Specifically, left lateralized activation in vOT does not necessarily indicate an increase in left vOT processing but is instead a consequence of decreased right vOT function. Moreover, the determinants of lateralization include both visual and semantic factors depending on the subregion tested.
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