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Language statistical learning responds to reinforcement learning principles rooted in the striatum
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Integrating when and what information in the left parietal lobe allows language rule generalization
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Integrating when and what information in the left parietal lobe allows language rule generalization
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In: PLoS Biol (2020)
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Right Structural and Functional Reorganization in Four-Year-Old Children with Perinatal Arterial Ischemic Stroke Predict Language Production
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In: ISSN: 2373-2822 ; eNeuro ; https://hal.archives-ouvertes.fr/hal-02281924 ; eNeuro, Society for Neuroscience, 2019, 6 (4), pp.ENEURO.0447-18.2019. ⟨10.1523/ENEURO.0447-18.2019⟩ (2019)
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Spontaneous synchronization to speech reveals neural mechanisms facilitating language learning
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Spontaneous synchronization to speech reveals neural mechanisms facilitating language learning
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The Lateralization of Speech-Brain Coupling Is Differentially Modulated by Intrinsic Auditory and Top-Down Mechanisms
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Right Structural and Functional Reorganization in Four-Year-Old Children with Perinatal Arterial Ischemic Stroke Predict Language Production
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Right Structural and Functional Reorganization in Four-Year-Old Children with Perinatal Arterial Ischemic Stroke Predict Language Production
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White noise facilitates new-word learning from context
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In: Faculty of Social Sciences - Papers (2019)
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Strength of Temporal White Matter Pathways Predicts Semantic Learning
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Abstract:
Learning the associations between words and meanings is a fundamental human ability. Although the language network is cortically well defined, the role of the white matter pathways supporting novel word-to-meaning mappings remains unclear. Here, by using contextual and cross-situational word learning, we tested whether learning the meaning of a new word is related to the integrity of the language-related white matter pathways in 40 adults (18 women). The arcuate, uncinate, inferior-fronto-occipital and inferior-longitudinal fasciculi were virtually dissected using manual and automatic deterministic fiber tracking. Critically, the automatic method allowed assessing the white matter microstructure along the tract. Results demonstrate that the microstructural properties of the left inferior-longitudinal fasciculus predict contextual learning, whereas the left uncinate was associated with cross-situational learning. In addition, we identified regions of special importance within these pathways: the posterior middle temporal gyrus, thought to serve as a lexical interface and specifically related to contextual learning; the anterior temporal lobe, known to be an amodal hub for semantic processing and related to cross-situational learning; and the white matter near the hippocampus, a structure fundamental for the initial stages of new-word learning and, remarkably, related to both types of word learning. No significant associations were found for the inferior-fronto-occipital fasciculus or the arcuate. While previous results suggest that learning new phonological word forms is mediated by the arcuate fasciculus, these findings show that the temporal pathways are the crucial neural substrate supporting one of the most striking human abilities: our capacity to identify correct associations between words and meanings under referential indeterminacy. SIGNIFICANCE STATEMENT The language-processing network is cortically (i.e., gray matter) well defined. However, the role of the white matter pathways that support novel word learning within this network remains unclear. In this work, we dissected language-related (arcuate, uncinate, inferior-fronto-occipital, and inferior-longitudinal) fasciculi using manual and automatic tracking. We found the left inferior-longitudinal fasciculus to be predictive of word-learning success in two word-to-meaning tasks: contextual and cross-situational learning paradigms. The left uncinate was predictive of cross-situational word learning. No significant correlations were found for the arcuate or the inferior-fronto-occipital fasciculus. While previous results showed that learning new phonological word forms is supported by the arcuate fasciculus, these findings demonstrate that learning new word-to-meaning associations is mainly dependent on temporal white matter pathways.
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Research Articles
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URL: http://www.ncbi.nlm.nih.gov/pubmed/29025925 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6596806/ https://doi.org/10.1523/JNEUROSCI.1720-17.2017
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Structural neuroplasticity in expert pianists depends on the age of musical training onset
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In: ISSN: 1053-8119 ; EISSN: 1095-9572 ; NeuroImage ; https://hal.archives-ouvertes.fr/hal-02099985 ; NeuroImage, Elsevier, 2016, 126, pp.106-119. ⟨10.1016/j.neuroimage.2015.11.008⟩ (2016)
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Neural basis of acquired amusia and its recovery after stroke
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Hidden word learning capacity through orthography in aphasia
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In: Cortex (2013)
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Prognostic value of cortically induced motor evoked activity by TMS in chronic stroke: Caveats from a revealing single clinical case.
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In: ISSN: 1471-2377 ; BMC Neurology ; https://www.hal.inserm.fr/inserm-00722739 ; BMC Neurology, BioMed Central, 2012, 12 (1), pp.35. ⟨10.1186/1471-2377-12-35⟩ (2012)
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Prognostic value of cortically induced motor evoked activity by TMS in chronic stroke: caveats from a very revealing single clinical case
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Prognostic value of cortically induced motor evoked activity by TMS in chronic stroke: caveats from a revealing single clinical case
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Integrating when and what information in the left parietal lobule allows language rule generalization
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