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Neural correlates of impaired vocal feedback control in post-stroke aphasia
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In: Neuroimage (2022)
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Functional differentiation in the language network revealed by lesion-symptom mapping
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In: Neuroimage (2022)
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Parcellating speech networks using connectivity and multivariate meta-analysis
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sj-docx-1-nnr-10.1177_1545968321999052 – Supplemental material for Indirect White Matter Pathways Are Associated With Treated Naming Improvement in Aphasia ...
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Indirect White Matter Pathways Are Associated With Treated Naming Improvement in Aphasia ...
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Indirect White Matter Pathways Are Associated With Treated Naming Improvement in Aphasia ...
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Measuring change in picture naming ability (Walker et al., 2021) ...
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sj-docx-1-nnr-10.1177_1545968321999052 – Supplemental material for Indirect White Matter Pathways Are Associated With Treated Naming Improvement in Aphasia ...
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Measuring change in picture naming ability (Walker et al., 2021) ...
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Isolating the white matter circuitry of the dorsal language stream: Connectome‐Symptom Mapping in stroke induced aphasia
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In: Hum Brain Mapp (2021)
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A Cognitive Psychometric Investigation of Word Production and Phonological Error Rates in Logopenic Progressive Aphasia
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In: Am J Speech Lang Pathol (2021)
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Independent contributions of structural and functional connectivity: Evidence from a stroke model
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In: Netw Neurosci (2021)
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One cat, Two cats, Red cat, Blue cats: Eliciting morphemes from individuals with primary progressive aphasia.
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In: Aphasiology (2021)
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Indirect white matter pathways are associated with treated naming improvement in aphasia
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Wilmskoetter, Janina; Fridriksson, Julius; Basilakos, Alexandra; Johnson, Lorelei Phillip; Marebwa, Barbara; Rorden, Chris; Warner, Graham; Hickok, Gregory; Hillis, Argye E.; Bonilha, Leonardo
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In: Neurorehabil Neural Repair (2021)
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Abstract:
BACKGROUND: White matter disconnection of language-specific brain regions associates with worse aphasia recovery. Despite a loss of direct connections, many stroke survivors may maintain indirect connections between brain regions. OBJECTIVE: To determine 1) whether preserved direct connections between language-specific brain regions relate to better post-stroke naming treatment outcomes compared to no direct connections, and 2) whether for individuals with a loss of direct connections, preserved indirect connections are associated with better treatment outcomes compared to individuals with no connections. METHODS: We computed structural whole-brain connectomes from 69 individuals with chronic left-hemisphere stroke and aphasia who completed a three-week-long language treatment that was supplemented by either anodal transcranial direct current stimulation (A-tDCS) or sham stimulation (S-tDCS). We determined differences in naming improvement between individuals with direct, indirect, and no connections using one-way analyses of covariance and multivariable linear regressions. RESULTS: Independently of tDCS modality, direct or indirect connections between the inferior frontal gyrus pars opercularis and angular gyrus were both associated with a greater increase in correct naming compared to no connections (p=0.027 and p=0.039, respectively). Participants with direct connections between the inferior frontal gyrus pars opercularis and middle temporal gyrus who received S-tDCS and participants with indirect connections who received A-tDCS significantly improved in naming accuracy. CONCLUSIONS: Post-stroke preservation of indirect white matter connections is associated with better treated naming improvement in aphasia even when direct connections are damaged. This mechanistic information can be used to stratify and predict treated naming recovery in individuals with aphasia.
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URL: http://www.ncbi.nlm.nih.gov/pubmed/33719732 https://doi.org/10.1177/1545968321999052 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068606/
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Untangling the Connectional Neuroanatomy of the Language Dominant Cerebral Hemisphere Using Diffusion-Weighted Magnetic Resonance Imaging
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The Cortical Organization of Syntax
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In: Cereb Cortex (2020)
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Agrammatism and Paragrammatism: A Cortical Double Dissociation Revealed by Lesion-Symptom Mapping
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In: Neurobiol Lang (Camb) (2020)
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Connections and Selections: Comparing Multivariate Predictions and Parameter Associations from Latent Variable Models of Picture Naming
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In: Cogn Neuropsychol (2020)
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A double dissociation between plural and possessive “s”: Evidence from the Morphosyntactic Generation test.
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In: Cogn Neuropsychol (2020)
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