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Xu X, Song X, Lin L, Pan N, Jin Y, Tan S, Cao M, Chen Y, Zhao J, Su X, Yang K, Jing J, Li X. White matter substrates underlying morphological awareness deficit in Chinese children with developmental dyslexia. Prog Neuropsychopharmacol Biol Psychiatry 2024; 134:111083. [PMID: 38992486 DOI: 10.1016/j.pnpbp.2024.111083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 06/24/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
BACKGROUND Morphological awareness (MA) deficit is strongly associated with Chinese developmental dyslexia (DD). However, little is known about the white matter substrates underlying the MA deficit in Chinese children with DD. METHODS In the current study, 34 Chinese children with DD and 42 typical developmental (TD) children were recruited to complete a diffusion magnetic resonance imaging scan and cognitive tests for MA. We conducted linear regression to test the correlation between MA and DTI metrics, the structural abnormalities of the tracts related to MA, and the interaction effect of DTI metrics by group on MA. RESULTS First, MA was significant related to the right inferior occipito-frontal fascicle (IFO) and inferior longitudinal fsciculus (ILF), the bilateral thalamo-occipital (T_OCC) and the left arcuate fasciculus (AF); second, compared to TD children, Chinese children with DD had lower axial diffusivity (AD) in the right IFO and T_OCC; third, there were significant interactions between metrics (fractional anisotropy (FA) and radial diffusivity (RD)) of the right IFO and MA in groups. The FA and RD of the right IFO were significantly associated with MA in children with DD but not in TD children. CONCLUSION In conclusion, compared to TD children, Chinese children with DD had axonal degeneration not only in the ventral tract (the right IFO) but also the visuospatial tract (the right T_OCC) which were associated with their MA deficit. And Chinese MA involved not only the ventral tracts, but also the visuospatial pathway and dorsal tracts.
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Affiliation(s)
- Xiaoyu Xu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaojing Song
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Lizi Lin
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Ning Pan
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yuying Jin
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Si Tan
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Muqing Cao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yingqian Chen
- The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jingxian Zhao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xintong Su
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Kaize Yang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jin Jing
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiuhong Li
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, China.
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Lee MM, Stoodley CJ. Neural bases of reading fluency: A systematic review and meta-analysis. Neuropsychologia 2024; 202:108947. [PMID: 38964441 DOI: 10.1016/j.neuropsychologia.2024.108947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 06/26/2024] [Accepted: 06/29/2024] [Indexed: 07/06/2024]
Abstract
Reading fluency, the ability to read quickly and accurately, is a critical marker of successful reading and is notoriously difficult to improve in reading disabled populations. Despite its importance to functional literacy, fluency is a relatively under-studied aspect of reading, and the neural correlates of reading fluency are not well understood. Here, we review the literature of the neural correlates of reading fluency as well as rapid automatized naming (RAN), a task that is robustly related to reading fluency. In a qualitative review of the neuroimaging literature, we evaluated structural and functional MRI studies of reading fluency in readers from a range of skill levels. This was followed by a quantitative activation likelihood estimate (ALE) meta-analysis of fMRI studies of reading speed and RAN measures. We anticipated that reading speed, relative to untimed reading and reading-related tasks, would harness ventral reading pathways that are thought to enable the fast, visual recognition of words. The qualitative review showed that speeded reading taps the entire canonical reading network. The meta-analysis indicated a stronger role of the ventral reading pathway in rapid reading and rapid naming. Both reviews identified regions outside the canonical reading network that contribute to reading fluency, such as the bilateral insula and superior parietal lobule. We suggest that fluent reading engages both domain-specific reading pathways as well as domain-general regions that support overall task performance and discuss future avenues of research to expand our understanding of the neural bases of fluent reading.
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Affiliation(s)
- Marissa M Lee
- Department of Neuroscience, American University, USA; Center for Applied Brain and Cognitive Sciences, Tufts University, USA
| | - Catherine J Stoodley
- Department of Neuroscience, American University, USA; Developing Brain Institute, Children's National Hospital, USA; Departments of Neurology and Pediatrics, The George Washington University School of Medicine and Health Sciences, USA.
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3
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Bathelt J, Rastle K, Taylor JSH. Relationship Between Resting State Functional Connectivity and Reading-Related Behavioural Measures in 69 Adults. NEUROBIOLOGY OF LANGUAGE (CAMBRIDGE, MASS.) 2024; 5:589-607. [PMID: 38939731 PMCID: PMC11210933 DOI: 10.1162/nol_a_00146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 03/25/2024] [Indexed: 06/29/2024]
Abstract
In computational models of reading, written words can be read using print-to-sound and/or print-to-meaning pathways. Neuroimaging data associate dorsal stream regions (left posterior occipitotemporal cortex, intraparietal cortex, dorsal inferior frontal gyrus [dIFG]) with the print-to-sound pathway and ventral stream regions (left anterior fusiform gyrus, middle temporal gyrus) with the print-to-meaning pathway. In 69 typical adults, we investigated whether resting state functional connectivity (RSFC) between the visual word form area (VWFA) and dorsal and ventral regions correlated with phonological (nonword reading, nonword repetition, spoonerisms), lexical-semantic (vocabulary, sensitivity to morpheme units in reading), and general literacy (word reading, spelling) skills. VWFA activity was temporally correlated with activity in both dorsal and ventral reading regions. In pre-registered whole-brain analyses, spoonerisms performance was positively correlated with RSFC between the VWFA and left dorsal regions (dIFG, superior parietal and intraparietal cortex). In exploratory region-of-interest analyses, VWFA-dIFG connectivity was also positively correlated with nonword repetition, spelling, and vocabulary. Connectivity between the VWFA and ventral stream regions was not associated with performance on any behavioural measure, either in whole-brain or region-of-interest analyses. Our results suggest that tasks such as spoonerisms and spellings, which are both complex (i.e., involve multiple subprocesses) and have high between-subject variability, provide greater opportunity for observing resting-state brain-behaviour associations. However, the complexity of these tasks limits the conclusions we can draw about the specific mechanisms that drive these associations. Future research would benefit from constructing latent variables from multiple tasks tapping the same reading subprocess.
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Affiliation(s)
- Joe Bathelt
- Department of Psychology, Royal Holloway University of London, UK
- Faculty of Social and Behavioural Sciences, University of Amsterdam, Netherlands
| | - Kathleen Rastle
- Department of Psychology, Royal Holloway University of London, UK
| | - J. S. H. Taylor
- Division of Psychology and Language Sciences, University College London, London, UK
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4
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Han Y, Jing Y, Shi Y, Mo H, Wan Y, Zhou H, Deng F. The role of language-related functional brain regions and white matter tracts in network plasticity of post-stroke aphasia. J Neurol 2024; 271:3095-3115. [PMID: 38607432 DOI: 10.1007/s00415-024-12358-5] [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: 01/05/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/13/2024]
Abstract
The neural mechanisms underlying language recovery after a stroke remain controversial. This review aimed to summarize the plasticity and reorganization mechanisms of the language network through neuroimaging studies. Initially, we discussed the involvement of right language homologues, perilesional tissue, and domain-general networks. Subsequently, we summarized the white matter functional mapping and remodeling mechanisms associated with language subskills. Finally, we explored how non-invasive brain stimulation (NIBS) promoted language recovery by inducing neural network plasticity. It was observed that the recruitment of right hemisphere language area homologues played a pivotal role in the early stages of frontal post-stroke aphasia (PSA), particularly in patients with larger lesions. Perilesional plasticity correlated with improved speech performance and prognosis. The domain-general networks could respond to increased "effort" in a task-dependent manner from the top-down when the downstream language network was impaired. Fluency, repetition, comprehension, naming, and reading skills exhibited overlapping and unique dual-pathway functional mapping models. In the acute phase, the structural remodeling of white matter tracts became challenging, with recovery predominantly dependent on cortical activation. Similar to the pattern of cortical activation, during the subacute and chronic phases, improvements in language functions depended, respectively, on the remodeling of right white matter tracts and the restoration of left-lateralized language structural network patterns. Moreover, the midline superior frontal gyrus/dorsal anterior cingulate cortex emerged as a promising target for NIBS. These findings offered theoretical insights for the early personalized treatment of aphasia after stroke.
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Affiliation(s)
- Yue Han
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yuanyuan Jing
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yanmin Shi
- Health Management (Physical Examination) Center, The Second Norman Bethune Hospital of Jilin University, Changchun, China
| | - Hongbin Mo
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yafei Wan
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Hongwei Zhou
- Department of Radiology, The First Hospital of Jilin University, Changchun, China.
| | - Fang Deng
- Department of Neurology, The First Hospital of Jilin University, Changchun, China.
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5
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Bonte M, Brem S. Unraveling individual differences in learning potential: A dynamic framework for the case of reading development. Dev Cogn Neurosci 2024; 66:101362. [PMID: 38447471 PMCID: PMC10925938 DOI: 10.1016/j.dcn.2024.101362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 02/02/2024] [Accepted: 03/01/2024] [Indexed: 03/08/2024] Open
Abstract
Children show an enormous capacity to learn during development, but with large individual differences in the time course and trajectory of learning and the achieved skill level. Recent progress in developmental sciences has shown the contribution of a multitude of factors including genetic variation, brain plasticity, socio-cultural context and learning experiences to individual development. These factors interact in a complex manner, producing children's idiosyncratic and heterogeneous learning paths. Despite an increasing recognition of these intricate dynamics, current research on the development of culturally acquired skills such as reading still has a typical focus on snapshots of children's performance at discrete points in time. Here we argue that this 'static' approach is often insufficient and limits advancements in the prediction and mechanistic understanding of individual differences in learning capacity. We present a dynamic framework which highlights the importance of capturing short-term trajectories during learning across multiple stages and processes as a proxy for long-term development on the example of reading. This framework will help explain relevant variability in children's learning paths and outcomes and fosters new perspectives and approaches to study how children develop and learn.
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Affiliation(s)
- Milene Bonte
- Department of Cognitive Neuroscience and Maastricht Brain Imaging Center, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, the Netherlands.
| | - Silvia Brem
- Department of Child and Adolescent Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Switzerland; Neuroscience Center Zurich, University of Zurich and ETH Zurich, Switzerland; URPP Adaptive Brain Circuits in Development and Learning (AdaBD), University of Zurich, Zurich, Switzerland
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6
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Sagi R, Taylor JSH, Neophytou K, Cohen T, Rapp B, Rastle K, Ben-Shachar M. White matter associations with spelling performance. Brain Struct Funct 2024:10.1007/s00429-024-02775-7. [PMID: 38528269 DOI: 10.1007/s00429-024-02775-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 02/12/2024] [Indexed: 03/27/2024]
Abstract
Multiple neurocognitive processes are involved in the highly complex task of producing written words. Yet, little is known about the neural pathways that support spelling in healthy adults. We assessed the associations between performance on a difficult spelling-to-dictation task and microstructural properties of language-related white matter pathways, in a sample of 73 native English-speaking neurotypical adults. Participants completed a diffusion magnetic resonance imaging scan and a cognitive assessment battery. Using constrained spherical deconvolution modeling and probabilistic tractography, we reconstructed dorsal and ventral white matter tracts of interest, bilaterally, in individual participants. Spelling associations were found in both dorsal and ventral stream pathways. In high-performing spellers, spelling scores significantly correlated with fractional anisotropy (FA) within the left inferior longitudinal fasciculus, a ventral stream pathway. In low-performing spellers, spelling scores significantly correlated with FA within the third branch of the right superior longitudinal fasciculus, a dorsal pathway. An automated analysis of spelling errors revealed that high- and low- performing spellers also differed in their error patterns, diverging primarily in terms of the orthographic distance between their errors and the correct spelling, compared to the phonological plausibility of their spelling responses. The results demonstrate the complexity of the neurocognitive architecture of spelling. The distinct white matter associations and error patterns detected in low- and high- performing spellers suggest that they rely on different cognitive processes, such that high-performing spellers rely more on lexical-orthographic representations, while low-performing spellers rely more on phoneme-to-grapheme conversion.
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Affiliation(s)
- Romi Sagi
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel.
| | - J S H Taylor
- Division of Psychology and Language Sciences, University College London, London, UK
| | - Kyriaki Neophytou
- Department of Cognitive Science, Johns Hopkins University, Baltimore, USA
- Department of Neurology, Johns Hopkins Medicine, Baltimore, USA
| | - Tamar Cohen
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel
| | - Brenda Rapp
- Department of Cognitive Science, Johns Hopkins University, Baltimore, USA
| | - Kathleen Rastle
- Department of Psychology, Royal Holloway, University of London, London, UK
| | - Michal Ben-Shachar
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel.
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7
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Vin R, Blauch NM, Plaut DC, Behrmann M. Visual word processing engages a hierarchical, distributed, and bilateral cortical network. iScience 2024; 27:108809. [PMID: 38303718 PMCID: PMC10831251 DOI: 10.1016/j.isci.2024.108809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/20/2023] [Accepted: 01/02/2024] [Indexed: 02/03/2024] Open
Abstract
Although the Visual Word Form Area (VWFA) in left temporal cortex is considered the pre-eminent region in visual word processing, other regions are also implicated. We examined the entire text-selective circuit, using functional MRI. Ten regions of interest (ROIs) per hemisphere were defined, which, based on clustering, grouped into early vision, high-level vision, and language clusters. We analyzed the responses of the ROIs and clusters to words, inverted words, and consonant strings using univariate, multivariate, and functional connectivity measures. Bilateral modulation by stimulus condition was evident, with a stronger effect in left hemisphere regions. Last, using graph theory, we observed that the VWFA was equivalently connected with early visual and language clusters in both hemispheres, reflecting its role as a mediator in the circuit. Although the individual ROIs and clusters bilaterally were flexibly altered by the nature of the input, stability held at the level of global circuit connectivity, reflecting the complex hierarchical distributed system serving visual text perception.
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Affiliation(s)
- Raina Vin
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Department of Psychology, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT 06520, USA
| | - Nicholas M. Blauch
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Program in Neural Computation, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - David C. Plaut
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Department of Psychology, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Marlene Behrmann
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Department of Psychology, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15219, USA
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8
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Neophytou K, Wiley R, Litovsky C, Tsapkini K, Rapp B. The right hemisphere's capacity for language: evidence from primary progressive aphasia. Cereb Cortex 2023; 33:9971-9985. [PMID: 37522277 PMCID: PMC10502784 DOI: 10.1093/cercor/bhad258] [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: 01/06/2023] [Revised: 06/21/2023] [Accepted: 06/22/2023] [Indexed: 08/01/2023] Open
Abstract
The role of the right hemisphere (RH) in core language processes is still a matter of intense debate. Most of the relevant evidence has come from studies of gray matter, with relatively little research on RH white matter (WM) connectivity. Using Diffusion Tensor Imaging-based tractography, the current work examined the role of the two hemispheres in language processing in 33 individuals with Primary Progressive Aphasia (PPA), aiming to better characterize the contribution of the RH to language processing in the context of left hemisphere (LH) damage. The findings confirm the impact of PPA on the integrity of the WM language tracts in the LH. Additionally, an examination of the relationship between tract integrity and language behaviors provides robust evidence of the involvement of the WM language tracts of both hemispheres in language processing in PPA. Importantly, this study provides novel evidence of a unique contribution of the RH to language processing (i.e. a contribution independent from that of the language-dominant LH). Finally, we provide evidence that the RH contribution is specific to language processing rather than being domain general. These findings allow us to better characterize the role of RH in language processing, particularly in the context of LH damage.
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Affiliation(s)
- Kyriaki Neophytou
- Department of Neurology, Johns Hopkins Medicine, Baltimore, MD, United States
| | - Robert Wiley
- Department of Psychology, University of North Carolina at Greensboro, Greensboro, NC, United States
- Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, United States
| | - Celia Litovsky
- Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, United States
| | - Kyrana Tsapkini
- Department of Neurology, Johns Hopkins Medicine, Baltimore, MD, United States
- Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, United States
| | - Brenda Rapp
- Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, United States
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Zhang K, Sun X, Yu CL, Eggleston RL, Marks RA, Nickerson N, Caruso VC, Hu XS, Tardif T, Chou TL, Booth JR, Kovelman I. Phonological and morphological literacy skills in English and Chinese: A cross-linguistic neuroimaging comparison of Chinese-English bilingual and monolingual English children. Hum Brain Mapp 2023. [PMID: 37483170 PMCID: PMC10400794 DOI: 10.1002/hbm.26419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 06/20/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023] Open
Abstract
Over the course of literacy development, children learn to recognize word sounds and meanings in print. Yet, they do so differently across alphabetic and character-based orthographies such as English and Chinese. To uncover cross-linguistic influences on children's literacy, we asked young Chinese-English simultaneous bilinguals and English monolinguals (N = 119, ages 5-10) to complete phonological and morphological awareness (MA) literacy tasks. Children completed the tasks in the auditory modality in each of their languages during functional near-infrared spectroscopy neuroimaging. Cross-linguistically, comparisons between bilinguals' two languages revealed that the task that was more central to reading in a given orthography, such as phonological awareness (PA) in English and MA in Chinese, elicited less activation in the left inferior frontal and parietal regions. Group comparisons between bilinguals and monolinguals in English, their shared language of academic instruction, revealed that the left inferior frontal was less active during phonology but more active during morphology in bilinguals relative to monolinguals. MA skills are generally considered to have greater language specificity than PA skills. Bilingual literacy training in a skill that is maximally similar across languages, such as PA, may therefore yield greater automaticity for this skill, as reflected in the lower activation in bilinguals relative to monolinguals. This interpretation is supported by negative correlations between proficiency and brain activation. Together, these findings suggest that both the structural characteristics and literacy experiences with a given language can exert specific influences on bilingual and monolingual children's emerging brain networks for learning to read.
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Affiliation(s)
- Kehui Zhang
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Xin Sun
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
- Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Chi-Lin Yu
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Rachel L Eggleston
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Rebecca A Marks
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Nia Nickerson
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Valeria C Caruso
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Xiao-Su Hu
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Twila Tardif
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
| | - Tai-Li Chou
- Department of Psychology, National Taiwan University, Taipei, Taiwan
| | - James R Booth
- Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee, USA
| | - Ioulia Kovelman
- Department of Psychology, University of Michigan, Ann Arbor, Michigan, USA
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10
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Zhao J, Song Z, Zhao Y, Thiebaut de Schotten M, Altarelli I, Ramus F. White matter connectivity in uncinate fasciculus accounts for visual attention span in developmental dyslexia. Neuropsychologia 2022; 177:108414. [PMID: 36343707 DOI: 10.1016/j.neuropsychologia.2022.108414] [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: 07/10/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022]
Abstract
The present study aimed to investigate the role of connectivity disruptions in two fiber pathways, the uncinate fasciculus (UF) and the frontal aslant tract (FAT), in developmental dyslexia and determine the relationship between the connectivity of these pathways and behavioral performance in children with dyslexia. A total of 26 French children with dyslexia and 31 age-matched control children were included. Spherical deconvolution tractography was used to reconstruct the two fiber pathways. Hindrance-modulated oriented anisotropy (HMOA) was used to measure the connectivity of each fiber pathway in both hemispheres. Only boys with dyslexia showed reduced HMOA in the UF compared to control boys. Furthermore, HMOA of the UF correlated with individual differences in the visual attention span in participants with dyslexia. All significant results found in HMOA of the UF were verified in fractional anisotropy (FA) of the UF using standard diffusion imaging model. This study suggests a differential sex effect on the connectivity disruption in the UF in developmental dyslexia. It also indicates that the UF may play an essential role in the visual attention span deficit in developmental dyslexia.
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Affiliation(s)
- Jingjing Zhao
- School of Psychology, Shaanxi Normal University, Xi'an, China.
| | - Zujun Song
- School of Psychology, Shaanxi Normal University, Xi'an, China
| | - Yueye Zhao
- School of Psychology, Shaanxi Normal University, Xi'an, China
| | - Michel Thiebaut de Schotten
- Institut des Maladies Neurodégénératives-UMR5293, CNRS, CEA, University of Bordeaux, Bordeaux, France; Brain Connectivity and Behavior Laboratory, Sorbonne Universities, Paris, France
| | - Irene Altarelli
- LaPsyDÉ Laboratory (UMR 8240), Université Paris Cité, Paris, France
| | - Franck Ramus
- Laboratoire de Sciences Cognitives et Psycholinguistique (ENS, EHESS, CNRS), Département D'Etudes Cognitives, Ecole Normale Supérieure, PSL University, Paris, France.
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11
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Cheema K, Sweneya S, Craig J, Huynh T, Ostevik AV, Reed A, Cummine J. An investigation of white matter properties as they relate to spelling behaviour in skilled and impaired readers. Neuropsychol Rehabil 2022:1-29. [PMID: 35323090 DOI: 10.1080/09602011.2022.2053168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
RESULTS While the inferior longitudinal fasciculus was more strongly related to spelling behaviour in skilled adults, the uncinate fasciculus was more strongly related to spelling behaviour in impaired adults. We found strong left lateralization of the arcuate fasciculus and inferior longitudinal fasciculus in both groups. However, lateralization of the inferior frontal occipital fasciculus was more strongly related to spelling response time behaviour in skilled adults, whereas lateralization of the uncinate fasciculus was more strongly related to spelling accuracy behaviour in the impaired adults. CONCLUSION This study provides some useful information for understanding the underlying white matter pathways that support spelling in skilled and impaired adults and underscore the advantage of adopting multiple spelling tasks and outcomes (i.e., response time and accuracy) to better characterize brain-behaviour relationships in skilled and impaired adults.
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Affiliation(s)
- Kulpreet Cheema
- Department of Neuroscience, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada
| | - Sarah Sweneya
- Faculty of Education, University of Alberta, Edmonton, AB, Canada
| | - Julia Craig
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.,Faculty of Science, University of Alberta, Edmonton, AB, Canada
| | - Truc Huynh
- Faculty of Science, University of Alberta, Edmonton, AB, Canada
| | - Amberley V Ostevik
- Department of Communications Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada
| | - Alesha Reed
- Department of Communications Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada
| | - Jacqueline Cummine
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, Canada.,Department of Communications Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada
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12
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Barouch B, Weiss Y, Katzir T, Bitan T. Neural Processing of Morphology During Reading in Children. Neuroscience 2022; 485:37-52. [PMID: 35026319 DOI: 10.1016/j.neuroscience.2021.12.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 12/16/2021] [Accepted: 12/18/2021] [Indexed: 11/17/2022]
Abstract
The importance of morphological segmentation for reading has been shown in numerous behavioral studies in children and adults. However, little is known about developmental changes in the neural basis of morphological processing. In addition to effects of age and reading skill, morphological processing during reading may be affected by the morphological structure of the language and the transparency of its orthography. Hebrew provides a unique opportunity to study these factors, with its rich morphological structure, and two versions of script that differ in orthographic transparency. Two groups of children (2nd-3rd and 5th-6th graders) were scanned using fMRI while reading aloud Hebrew nouns. Half of the words were composed of roots and templates (bi-morphemic) and half were mono-morphemic. The words were presented at two levels of transparency: with or without diacritics. ROI analyses showed greater activation for mono over bi-morphemic words across groups in the anterior portions of bilateral middle and superior temporal gyri, especially for the transparent script. These results diverge from previous finding in adults, showing left frontal activation in the non-transparent script with the same stimuli. These results support the early sensitivity of young Hebrew readers to the rich morphological structure of their language but suggest a developmental change in the role of morphological processes during reading. While in adults morpho-phonological segmentation during reading may compensate for orthographic opacity, morphological processes in children may rely more on semantic aspects, and are enhanced by orthographic transparency.
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Affiliation(s)
- Bechor Barouch
- Psychology Department and Institute for Information Processing and Decision Making, University of Haifa, 199 Aba Khoushy Ave., Mount Carmel, Haifa 3498838, Israel.
| | - Yael Weiss
- Institute for Learning and Brain Sciences, University of Washington, 1715 NE Columbia Road, Portage Bay Building, Box 357988, Seattle, WA 98195-7988 USA
| | - Tami Katzir
- Department of Learning Disabilities, The E.J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, 199 Aba Khoushy Ave., Mount Carmel, Haifa 3498838, Israel
| | - Tali Bitan
- Psychology Department and Institute for Information Processing and Decision Making, University of Haifa, 199 Aba Khoushy Ave., Mount Carmel, Haifa 3498838, Israel; Department of Speech Language Pathology, University of Toronto, Toronto, Canada.
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13
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Jossinger S, Sares A, Zislis A, Sury D, Gracco V, Ben-Shachar M. White matter correlates of sensorimotor synchronization in persistent developmental stuttering. JOURNAL OF COMMUNICATION DISORDERS 2022; 95:106169. [PMID: 34856426 PMCID: PMC8821245 DOI: 10.1016/j.jcomdis.2021.106169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 10/25/2021] [Accepted: 11/11/2021] [Indexed: 06/13/2023]
Abstract
INTRODUCTION Individuals with persistent developmental stuttering display deficits in aligning motor actions to external cues (i.e., sensorimotor synchronization). Diffusion imaging studies point to stuttering-associated differences in dorsal, not ventral, white matter pathways, and in the cerebellar peduncles. Here, we studied microstructural white matter differences between adults who stutter (AWS) and fluent speakers using two complementary approaches to: (a) assess previously reported group differences in white matter diffusivity, and (b) evaluate the relationship between white matter diffusivity and sensorimotor synchronization in each group. METHODS Participants completed a sensorimotor synchronization task and a diffusion MRI scan. We identified the cerebellar peduncles and major dorsal- and ventral-stream language pathways in each individual and assessed correlations between sensorimotor synchronization and diffusion measures along the tracts. RESULTS The results demonstrated group differences in dorsal, not ventral, language tracts, in alignment with prior reports. Specifically, AWS had significantly lower fractional anisotropy (FA) in the left arcuate fasciculus, and significantly higher mean diffusivity (MD) in the bilateral frontal aslant tract compared to fluent speakers, while no significant group difference was detected in the inferior fronto-occipital fasciculus. We also found significant group differences in both FA and MD of the left middle cerebellar peduncle. Comparing patterns of association with sensorimotor synchronization revealed a novel double dissociation: MD within the left inferior cerebellar peduncle was significantly correlated with mean asynchrony in AWS but not in fluent speakers, while FA within the left arcuate fasciculus was significantly correlated with mean asynchrony in fluent speakers, but not in AWS. CONCLUSIONS Our results support the view that stuttering involves altered connectivity in dorsal tracts and that AWS may rely more heavily on cerebellar tracts to process timing information. Evaluating microstructural associations with sensitive behavioral measures provides a powerful tool for discovering additional functional differences in the underlying connectivity in AWS.
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Affiliation(s)
- Sivan Jossinger
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel.
| | - Anastasia Sares
- Department of Psychology, Concordia University, Montréal, Canada; Centre for Research on Brain, Language and Music, McGill University, Montréal, Canada
| | - Avital Zislis
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel
| | - Dana Sury
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel
| | - Vincent Gracco
- Centre for Research on Brain, Language and Music, McGill University, Montréal, Canada; School of Communication Sciences and Disorders, McGill University, Montréal, Canada; Haskins Laboratories, New Haven, CT, United States
| | - Michal Ben-Shachar
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel; The Department of English Literature and Linguistics, Bar-Ilan University, Ramat-Gan, Israel
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14
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Caffarra S, Karipidis II, Yablonski M, Yeatman JD. Anatomy and physiology of word-selective visual cortex: from visual features to lexical processing. Brain Struct Funct 2021; 226:3051-3065. [PMID: 34636985 PMCID: PMC8639194 DOI: 10.1007/s00429-021-02384-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/07/2021] [Indexed: 12/20/2022]
Abstract
Over the past 2 decades, researchers have tried to uncover how the human brain can extract linguistic information from a sequence of visual symbols. The description of how the brain's visual system processes words and enables reading has improved with the progressive refinement of experimental methodologies and neuroimaging techniques. This review provides a brief overview of this research journey. We start by describing classical models of object recognition in non-human primates, which represent the foundation for many of the early models of visual word recognition in humans. We then review functional neuroimaging studies investigating the word-selective regions in visual cortex. This research led to the differentiation of highly specialized areas, which are involved in the analysis of different aspects of written language. We then consider the corresponding anatomical measurements and provide a description of the main white matter pathways carrying neural signals crucial to word recognition. Finally, in an attempt to integrate structural, functional, and electrophysiological findings, we propose a view of visual word recognition, accounting for spatial and temporal facets of word-selective neural processes. This multi-modal perspective on the neural circuitry of literacy highlights the relevance of a posterior-anterior differentiation in ventral occipitotemporal cortex for visual processing of written language and lexical features. It also highlights unanswered questions that can guide us towards future research directions. Bridging measures of brain structure and function will help us reach a more precise understanding of the transformation from vision to language.
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Affiliation(s)
- Sendy Caffarra
- Division of Developmental-Behavioral Pediatrics, Stanford University School of Medicine, 291 Campus Drive, Li Ka Shing Building, Stanford, CA, 94305-5101, USA
- Stanford University Graduate School of Education, 485 Lasuen Mall, Stanford, CA, 94305, USA
- Basque Center on Cognition, Brain and Language, Mikeletegi 69, 20009, San Sebastian, Spain
- University of Modena and Reggio Emilia, Via Campi 287, 41125, Modena, Italy
| | - Iliana I Karipidis
- Department of Psychiatry and Behavioral Sciences, Center for Interdisciplinary Brain Sciences Research, School of Medicine, Stanford University, 401 Quarry Road, Stanford, CA, 94305-5717, USA.
| | - Maya Yablonski
- Division of Developmental-Behavioral Pediatrics, Stanford University School of Medicine, 291 Campus Drive, Li Ka Shing Building, Stanford, CA, 94305-5101, USA
- Stanford University Graduate School of Education, 485 Lasuen Mall, Stanford, CA, 94305, USA
| | - Jason D Yeatman
- Division of Developmental-Behavioral Pediatrics, Stanford University School of Medicine, 291 Campus Drive, Li Ka Shing Building, Stanford, CA, 94305-5101, USA
- Stanford University Graduate School of Education, 485 Lasuen Mall, Stanford, CA, 94305, USA
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15
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Jossinger S, Mawase F, Ben-Shachar M, Shmuelof L. Locomotor Adaptation Is Associated with Microstructural Properties of the Inferior Cerebellar Peduncle. THE CEREBELLUM 2021; 19:370-382. [PMID: 32034666 DOI: 10.1007/s12311-020-01116-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In sensorimotor adaptation paradigms, participants learn to adjust their behavior in response to an external perturbation. Locomotor adaptation and reaching adaptation depend on the cerebellum and are accompanied by changes in functional connectivity in cortico-cerebellar circuits. In order to gain a better understanding of the particular cerebellar projections involved in locomotor adaptation, we assessed the contribution of specific white matter pathways to the magnitude of locomotor adaptation and to long-term motor adaptation effects (recall and relearning). Diffusion magnetic resonance imaging with deterministic tractography was used to delineate the inferior and superior cerebellar peduncles (ICP, SCP) and the corticospinal tract (CST). Correlations were calculated to assess the association between the diffusivity values along the tracts and behavioral measures of locomotor adaptation. The results point to a significant correlation between the magnitude of adaptation and diffusivity values in the left ICP. Specifically, a higher magnitude of adaptation was associated with higher mean diffusivity and with lower anisotropy values in the left ICP, but not in other pathways. Post hoc analysis revealed that the effect stems from radial, not axial, diffusivity. The magnitude of adaptation was further associated with the degree of ICP lateralization, such that greater adaptation magnitude was correlated with increased rightward asymmetry of the ICP. Our findings suggest that the magnitude of locomotor adaptation depends on afferent signals to the cerebellum, transmitted via the ICP, and point to the contribution of error detection to locomotor adaptation rate.
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Affiliation(s)
- Sivan Jossinger
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel.
| | - Firas Mawase
- Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Michal Ben-Shachar
- The Gonda Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat-Gan, Israel.,The Department of English Literature and Linguistics, Bar-Ilan University, Ramat-Gan, Israel
| | - Lior Shmuelof
- Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Department of Brain and Cognitive Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Department of Physiology and Cell Biology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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16
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Sarubbo S, Annicchiarico L, Corsini F, Zigiotto L, Herbet G, Moritz-Gasser S, Dalpiaz C, Vitali L, Tate M, De Benedictis A, Amorosino G, Olivetti E, Rozzanigo U, Petralia B, Duffau H, Avesani P. Planning Brain Tumor Resection Using a Probabilistic Atlas of Cortical and Subcortical Structures Critical for Functional Processing: A Proof of Concept. Oper Neurosurg (Hagerstown) 2021; 20:E175-E183. [PMID: 33372966 DOI: 10.1093/ons/opaa396] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/13/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Functional preoperative planning for resection of intrinsic brain tumors in eloquent areas is still a challenge. Predicting subcortical functional framework is especially difficult. Direct electrical stimulation (DES) is the recommended technique for resection of these lesions. A reliable probabilistic atlas of the critical cortical epicenters and subcortical framework based on DES data was recently published. OBJECTIVE To propose a pipeline for the automated alignment of the corticosubcortical maps of this atlas with T1-weighted MRI. METHODS To test the alignment, we selected 10 patients who underwent resection of brain lesions by using DES. We aligned different cortical and subcortical functional maps to preoperative volumetric T1 MRIs (with/without gadolinium). For each patient we quantified the quality of the alignment, and we calculated the match between the location of the functional sites found at DES and the functional maps of the atlas. RESULTS We found an accurate brain extraction and alignment of the functional maps with both the T1 MRIs of each patient. The matching analysis between functional maps and functional responses collected during surgeries was 88% at cortical and, importantly, 100% at subcortical level, providing a further proof of the correct alignment. CONCLUSION We demonstrated quantitatively and qualitatively the reliability of this tool that may be used for presurgical planning, providing further functional information at the cortical level and a unique probabilistic prevision of distribution of the critical subcortical structures. Finally, this tool offers the chance for multimodal planning through integrating this functional information with other neuroradiological and neurophysiological techniques.
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Affiliation(s)
- Silvio Sarubbo
- Department of Neurosurgery, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy.,Structural and Functional Connectivity Lab Project, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Luciano Annicchiarico
- Department of Neurosurgery, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy.,Structural and Functional Connectivity Lab Project, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Francesco Corsini
- Department of Neurosurgery, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy.,Structural and Functional Connectivity Lab Project, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Luca Zigiotto
- Department of Neurosurgery, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy.,Structural and Functional Connectivity Lab Project, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Guillaume Herbet
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France.,National Institute for Health and Medical Research (INSERM), NSERM U1191, Institute of Functional Genomics, University of Montpellier, Montpellier, France
| | - Sylvie Moritz-Gasser
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France.,National Institute for Health and Medical Research (INSERM), NSERM U1191, Institute of Functional Genomics, University of Montpellier, Montpellier, France
| | - Chiara Dalpiaz
- Department of Anesthesiology and Intensive Care, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Luca Vitali
- Department of Anesthesiology and Intensive Care, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Matthew Tate
- Departments of Neurosurgery and Neurology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois
| | - Alessandro De Benedictis
- Neurosurgery Unit, Department of Neuroscience, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Gabriele Amorosino
- Neuroinformatics Laboratory (NiLab), Bruno Kessler Foundation (FBK), Trento, Italy.,Center for Mind/Brain Sciences - CIMeC, University of Trento, Rovereto, Italy
| | - Emanuele Olivetti
- Neuroinformatics Laboratory (NiLab), Bruno Kessler Foundation (FBK), Trento, Italy.,Center for Mind/Brain Sciences - CIMeC, University of Trento, Rovereto, Italy
| | - Umberto Rozzanigo
- Department of Radiology, Division of Neuroradiology, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Benedetto Petralia
- Department of Radiology, Division of Neuroradiology, "S. Chiara" Hospital, Azienda Provinciale per i Servizi Sanitari, Trento, Italy
| | - Hugues Duffau
- Department of Neurosurgery, Gui de Chauliac Hospital, Montpellier University Medical Center, Montpellier, France.,National Institute for Health and Medical Research (INSERM), NSERM U1191, Institute of Functional Genomics, University of Montpellier, Montpellier, France
| | - Paolo Avesani
- Neuroinformatics Laboratory (NiLab), Bruno Kessler Foundation (FBK), Trento, Italy.,Center for Mind/Brain Sciences - CIMeC, University of Trento, Rovereto, Italy
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17
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Grotheer M, Yeatman J, Grill-Spector K. White matter fascicles and cortical microstructure predict reading-related responses in human ventral temporal cortex. Neuroimage 2021; 227:117669. [PMID: 33359351 PMCID: PMC8416179 DOI: 10.1016/j.neuroimage.2020.117669] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 12/10/2020] [Accepted: 12/12/2020] [Indexed: 01/30/2023] Open
Abstract
Reading-related responses in the lateral ventral temporal cortex (VTC) show a consistent spatial layout across individuals, which is puzzling, since reading skills are acquired during childhood. Here, we tested the hypothesis that white matter fascicles and gray matter microstructure predict the location of reading-related responses in lateral VTC. We obtained functional (fMRI), diffusion (dMRI), and quantitative (qMRI) magnetic resonance imaging data in 30 adults. fMRI was used to map reading-related responses by contrasting responses in a reading task with those in adding and color tasks; dMRI was used to identify the brain's fascicles and to map their endpoint densities in lateral VTC; qMRI was used to measure proton relaxation time (T1), which depends on cortical tissue microstructure. We fit linear models that predict reading-related responses in lateral VTC from endpoint density and T1 and used leave-one-subject-out cross-validation to assess prediction accuracy. Using a subset of our participants (N=10, feature selection set), we find that i) endpoint densities of the arcuate fasciculus (AF), inferior longitudinal fasciculus (ILF), and vertical occipital fasciculus (VOF) are significant predictors of reading-related responses, and ii) cortical T1 of lateral VTC further improves the predictions of the fascicle model. In the remaining participants (N=20, validation set), we show that a linear model that includes T1, AF, ILF and VOF significantly predicts i) the map of reading-related responses across lateral VTC and ii) the location of the visual word form area, a region critical for reading. Overall, our data-driven approach reveals that the AF, ILF, VOF and cortical microstructure have a consistent spatial relationship with an individual's reading-related responses in lateral VTC.
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Affiliation(s)
- Mareike Grotheer
- Psychology Department, Stanford University, Stanford, CA 94305, USA..
| | - Jason Yeatman
- Psychology Department, Stanford University, Stanford, CA 94305, USA.; Graduate School of Education, Stanford University, Stanford, CA 94305, USA.; Division of Developmental-Behavioral Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA.; Wu Tsai Neurosciences Institute, Stanford University, CA 94305, USA
| | - Kalanit Grill-Spector
- Psychology Department, Stanford University, Stanford, CA 94305, USA.; Wu Tsai Neurosciences Institute, Stanford University, CA 94305, USA
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18
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A general role for ventral white matter pathways in morphological processing: Going beyond reading. Neuroimage 2020; 226:117577. [PMID: 33221439 DOI: 10.1016/j.neuroimage.2020.117577] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 10/13/2020] [Accepted: 11/11/2020] [Indexed: 11/23/2022] Open
Abstract
The ability to recognize the structural components of words, known as morphological processing, was recently associated with the bilateral ventral white matter pathways, across different writing systems. However, it remains unclear whether these associations are specific to the context of reading. To shed light on this question, in the current study we investigated whether the ventral pathways are associated with morphological processing in an oral word production task that does not involve reading. Forty-five participants completed a morpheme-based fluency task in Hebrew, as well as diffusion MRI (dMRI) scans. We used probabilistic tractography to segment the major ventral and dorsal white matter pathways, and assessed the correlations between their microstructural properties and performance on the morpheme-based fluency task. We found significant correlations between morpheme-based fluency and properties of the bilateral ventral tracts, suggesting that the involvement of these tracts in morphological processing extends beyond the reading modality. In addition, significant correlations were found in the frontal aslant tract (FAT), a dorsal tract associated with oral fluency and speech production. Together, our findings emphasize that neurocognitive associations reflect both the cognitive construct under investigation as well as the task used for its assessment. Lastly, to elucidate the biological factors underlying these correlations, we incorporated the composite hindered and restricted model of diffusion (CHARMED) framework, measured in independent scans. We found that only some of our findings could be attributed to variation in a CHARMED-based estimate of fiber density. Further, we were able to uncover additional correlations that could not be detected using traditional dMRI indices. In sum, our results show that the involvement of the ventral tracts in morphological processing extends to the production domain, and demonstrate the added value of including sensitive structural measurements in neurocognitive investigations.
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19
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Yablonski M, Ben-Shachar M. Sensitivity to word structure in adult Hebrew readers is associated with microstructure of the ventral reading pathways. Cortex 2020; 128:234-253. [DOI: 10.1016/j.cortex.2020.03.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 02/17/2020] [Accepted: 03/26/2020] [Indexed: 12/13/2022]
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20
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Landa J, Bar O, Bord A, Patael SZ, Livny A, Sadeh Vered T, Tsarfaty G, Ahonniska-Assa J. Growing up with Bilateral parieto-occipital injury: over ten years of clinical observation and neuropsychological follow-up. Neurocase 2019; 25:235-242. [PMID: 31571528 DOI: 10.1080/13554794.2019.1668420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This paper presents a follow-up of a child with Balint's syndrome over more than a decade. The patient experienced traumatic brain injury before age 12, resulting in bilateral occipito-parietal infarctions and a clinical presentation of Balint's syndrome. Neuropsychological assessments at three time points showed average verbal abilities alongside persistent difficulties in visual orientation, mirrored in the patient's daily life. Her outstanding compensatory abilities in the face of these impairments are discussed with respect to the recruitment of the ventral visual stream and the role of top-down processing. This profile may help to determine interventions for younger patients with similar lesions.
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Affiliation(s)
- Jana Landa
- Pediatric Rehabilitation Department, Edmond and Lily Shafra Children's Hospital, Sheba Medical Center , Ramat Gan , Israel.,Sackler Faculty of Medicine, Tel-Aviv University , Tel Aviv , Israel
| | - Orly Bar
- Pediatric Rehabilitation Department, Edmond and Lily Shafra Children's Hospital, Sheba Medical Center , Ramat Gan , Israel
| | - Ayelet Bord
- Pediatric Rehabilitation Department, Edmond and Lily Shafra Children's Hospital, Sheba Medical Center , Ramat Gan , Israel
| | - Smadar Zohar Patael
- Pediatric Rehabilitation Department, Edmond and Lily Shafra Children's Hospital, Sheba Medical Center , Ramat Gan , Israel.,Department of Communication Disorders, Steyer School of Health Professions, Sackler Faculty of Medicine, Tel Aviv University , Tel Aviv , Israel
| | - Abigail Livny
- Sackler Faculty of Medicine, Tel-Aviv University , Tel Aviv , Israel.,Department of Diagnostic Imaging, Sheba Medical Center , Ramat Gan , Israel.,J. Sagol Neuroscience Center, Sheba Medical Center , Ramat Gan , Israel
| | - Tal Sadeh Vered
- Sackler Faculty of Medicine, Tel-Aviv University , Tel Aviv , Israel.,Department of Pediatric Critical Care, The Edmond and Lily Safra Children's Hospital , Tel Hashomer , Israel
| | - Galia Tsarfaty
- Sackler Faculty of Medicine, Tel-Aviv University , Tel Aviv , Israel.,Department of Diagnostic Imaging, Sheba Medical Center , Ramat Gan , Israel
| | - Jaana Ahonniska-Assa
- Pediatric Rehabilitation Department, Edmond and Lily Shafra Children's Hospital, Sheba Medical Center , Ramat Gan , Israel.,School of Behavioral Sciences, Academic College of Tel Aviv Yafo , Tel Aviv , Israel
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21
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Rastle K. EPS mid-career prize lecture 2017: Writing systems, reading, and language. Q J Exp Psychol (Hove) 2019; 72:677-692. [DOI: 10.1177/1747021819829696] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Skilled reading reflects an accumulation of experience with written language. Written language is typically viewed as an expression of spoken language, and this perspective has motivated approaches to understanding reading and reading acquisition. However, in this article, I develop the proposal that written language has diverged from spoken language in important ways that maximise the transmission of meaningful information, and that this divergence has been central to the development of rapid, skilled reading. I use English as an example to show that weaknesses in the relationship between spelling and sound can give rise to strong regularities between spelling and meaning that are critical for the rapid analysis of printed words. I conclude by arguing that the nature of the reading system is a reflection of the writing system and that a deep understanding of reading can be obtained only through a deep understanding of written language.
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