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Dissociable contributions of frontal and temporal brain regions to basic semantic composition
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In: Brain Commun (2021)
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Short-term modulation of the lesioned language network
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Hartwigsen, Gesa; Stockert, Anika; Charpentier, Louise; Wawrzyniak, Max; Klingbeil, Julian; Wrede, Katrin; Obrig, Hellmuth; Saur, Dorothee. - : eLife Sciences Publications, Ltd, 2020
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Abstract:
Language is sustained by large-scale networks in the human brain. Stroke often severely affects function and network dynamics. However, the adaptive potential of the brain to compensate for lesions is poorly understood. A key question is whether upregulation of the right hemisphere is adaptive for language recovery. Targeting the potential for short-term reorganization in the lesioned brain, we applied 'virtual lesions' over left anterior or posterior inferior frontal gyrus (IFG) in post-stroke patients with left temporo-parietal lesions prior to functional neuroimaging. Perturbation of the posterior IFG selectively delayed phonological decisions and decreased phonological activity. The individual response delay was correlated with the upregulation of the lesion homologue, likely reflecting compensation. Moreover, stronger individual tract integrity of the right superior longitudinal fascicle was associated with lesser disruption. Our results provide evidence for functional and structural underpinnings of plasticity in the lesioned language network, and a compensatory role of the right hemisphere.
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Keyword:
Neuroscience
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URL: https://doi.org/10.7554/eLife.54277 http://www.ncbi.nlm.nih.gov/pubmed/32181741 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7077979/
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A novel multi-word paradigm for investigating semantic context effects in language production
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Recursive hierarchical embedding in vision is impaired by posterior middle temporal gyrus lesions
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Bilingual and Monolingual First Language Acquisition Experience Differentially Shapes Children’s Property Term Learning: Evidence from Behavioral and Neurophysiological Measures
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Impact of associative word learning on phonotactic processing in 6-month-old infants: A combined EEG and fNIRS study
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Der Erwerb von Adjektiven in der bilingualen und monolingualen Entwicklung aus psycho- und neurolinguistischer Perspektive
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Acoustic processing of temporally modulated sounds in infants: evidence from a combined near-infrared spectroscopy and EEG study ...
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Acoustic processing of temporally modulated sounds in infants: evidence from a combined near-infrared spectroscopy and EEG study
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From acoustic to language processing
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Telkemeyer, Silke. - : Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2011
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Acoustic Processing of Temporally Modulated Sounds in Infants: Evidence from a Combined Near-Infrared Spectroscopy and EEG Study
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From Acoustic Segmentation to Language Processing: Evidence from Optical Imaging
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Sensitivity of Newborn Auditory Cortex to the Temporal Structure of Sounds
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