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Impact of literacy on the functional connectivity of vision and language related networks
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In: ISSN: 1053-8119 ; EISSN: 1095-9572 ; NeuroImage ; https://hal.sorbonne-universite.fr/hal-02551991 ; NeuroImage, Elsevier, 2020, 213, pp.116722. ⟨10.1016/j.neuroimage.2020.116722⟩ (2020)
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Abstract:
International audience ; Learning to read leads to functional and structural changes in cortical brain areas related to vision and language. Previous evidence suggests that the Visual Word Form Area (VWFA), a region devoted to the recognition of letter strings in literate persons, acts as an interface between both systems. While different studies have performed univariate analyses to study the effects of literacy on brain function, little is known about its impact on whole functional networks, especially when literacy is acquired during adulthood. We investigated functional connectivity in three groups of adults with different literacy status: illiterates, ex-illiterates (i.e., who learned to read during adulthood), and literates (i.e., who learned to read in childhood). We used a data-driven, multivariate whole brain approach (Independent Component Analysis [ICA]) combined with a region of interest (ROI) analysis in order to explore the functional connectivity of the VWFA with four ICA networks related to vision and language functions. ICA allowed for the identification of four networks of interest: left fronto-parietal, auditory, medial visual and lateral visual functional networks, plus a control right fronto-parietal network. We explored the effects literacy on the connectivity between the VWFA and these networks, trying furthermore to disentangle the roles of reading proficiency and age of acquisition (i.e., literacy status) in these changes. Results showed that functional connectivity between the VWFA and the left fronto-parietal and lateral visual networks increased and decreased, respectively, with literacy. Moreover, the functional coupling of the VWFA and the auditory network decreased with literacy. This study provides novel insights in the mechanisms of reading acquisition and brain plasticity, putting to light the emergence of the VWFA as a bridge between language and vision. Further studies are required to characterize the interplay of proficiency and age of reading acquisition, and its relevance to models of brain plasticity across lifespan.
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Keyword:
[SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences; Functional connectivity; Independent Component Analysis; Language; Left fronto-parietal network; Literacy; Visual Word Form Area
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URL: https://hal.sorbonne-universite.fr/hal-02551991/document https://hal.sorbonne-universite.fr/hal-02551991/file/1-s2.0-S1053811920302093-main.pdf https://doi.org/10.1016/j.neuroimage.2020.116722 https://hal.sorbonne-universite.fr/hal-02551991
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Learning to read and its implications on memory and cognition ...
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Learning to read and its implications on memory and cognition ...
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Les bases neurales de l’apprentissage de la lecture
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In: Langue française, N 199, 3, 2018-08-29, pp.17-33 (2018)
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O MILAGRE DA LEITURA: DE SINAIS ESCRITOS A IMAGENS IMORTAIS
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In: DELTA: Documentação e Estudos em Linguística Teórica e Aplicada; v. 32, n. 4 (2016) ; 1678-460X ; 0102-4450 (2017)
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How Early Does the Brain Distinguish between Regular Words, Irregular Words, and Pseudowords during the Reading Process? Evidence from Neurochronometric TMS
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In: ISSN: 0898-929X ; EISSN: 1530-8898 ; Journal of Cognitive Neuroscience ; https://hal.archives-ouvertes.fr/hal-01485314 ; Journal of Cognitive Neuroscience, Massachusetts Institute of Technology Press (MIT Press), 2015, Vol. 27 n° 6, pp.1259-1274. ⟨10.1162/jocn_a_00779⟩ (2015)
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How does reading performance modulate the impact of orthographic knowledge on speech processing? A comparison of normal readers and dyslexic adults
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In: ISSN: 0736-9387 ; EISSN: 1934-7243 ; Annals of Dyslexia ; https://hal.archives-ouvertes.fr/hal-01485959 ; Annals of Dyslexia, Springer Verlag, 2014, 64 (1), pp.57-76 (2014)
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Unattentive speech processing is influenced by orthographic knowledge: Evidence from mismatch negativity
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In: ISSN: 0093-934X ; EISSN: 1090-2155 ; Brain and Language ; https://hal.archives-ouvertes.fr/hal-01486089 ; Brain and Language, Elsevier, 2014, 137, pp.103-111 (2014)
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A cultural side effect: learning to read interferes with identity processing of familiar objects
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How does reading performance influence the impact of orthographic knowledge on speech processing? A comparison of normal readers and dyslexic adults
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In: 11th International Symposium of Psycholinguistics ; https://hal.archives-ouvertes.fr/hal-01728419 ; 11th International Symposium of Psycholinguistics, 2013, Tenerif, Spain (2013)
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Role and activation time course of phonological and orthographic information during phoneme judgments
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In: ISSN: 0028-3932 ; EISSN: 1873-3514 ; Neuropsychologia ; https://hal.archives-ouvertes.fr/hal-01489650 ; Neuropsychologia, Elsevier, 2012, 50, pp.2897-2906 (2012)
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Syllable Effects in a Fragment-Detection Task in Italian Listeners
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Naming in noise: the contribution of orthographic knowledge to speech repetition
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In: ISSN: 1664-1078 ; Frontiers in Psychology ; https://hal.archives-ouvertes.fr/hal-01491782 ; Frontiers in Psychology, Frontiers, 2011, pp.12 (2011)
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Contribution and chronometry of left ventral occipito-temporal cortex and posterior middle temporal gyrus in reading: Evidence from transcranial magnetic stimulation
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In: 10th International Symposium of Psycholinguistics ; https://hal.archives-ouvertes.fr/hal-01728428 ; 10th International Symposium of Psycholinguistics, 2011, San Sebastian, Spain (2011)
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Naming in Noise: The Contribution of Orthographic Knowledge to Speech Repetition
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Da corrente acústica à palavra : estádios do processamento da percepção da fala
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