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Brain structural evidence for a frontal pole specialization in glossolalia
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In: IBRO Rep (2020)
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Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Supplementary_material_C – Supplemental material for Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Supplementary_material_C – Supplemental material for Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Supplementary_material_A – Supplemental material for Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Supplementary_material_B – Supplemental material for Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Supplementary_material_A – Supplemental material for Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Supplementary_material_B – Supplemental material for Effects of Prefrontal Transcranial Direct Current Stimulation on Lexical Access in Chronic Poststroke Aphasia ...
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Dorsolateral Prefrontal Transcranial Direct Current Stimulation Modulates Language Processing but Does Not Facilitate Overt Second Language Word Production ...
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Dorsolateral prefrontal transcranial direct current stimulation modulates language processing but does not facilitate overt second language word production
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Dorsolateral Prefrontal Transcranial Direct Current Stimulation Modulates Language Processing but Does Not Facilitate Overt Second Language Word Production
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Abstract:
Word retrieval in bilingual speakers partly depends on executive control systems in the left prefrontal cortex – including dorsolateral prefrontal cortex (DLPFC). We tested the hypothesis that DLPFC modulates word production of words specifically in a second language (L2) by measuring the effects of anodal transcranial direct current stimulation (anodal-tDCS) over the DLPFC on picture naming and word translation and on event-related potentials (ERPs) and their sources. Twenty-six bilingual participants with “unbalanced” proficiency in two languages were given 20 min of 1.5 mA anodal or sham tDCS (double-blind stimulation design, counterbalanced stimulation order, 1-week intersession delay). The participants then performed the following tasks: verbal and non-verbal fluency during anodal-tDCS stimulation and first and second language (L1 and L2) picture naming and translation [forward (L1 → L2) and backward (L2 → L1)] immediately after stimulation. The electroencephalogram (EEG) was recorded during picture naming and translation. On the behavioral level, anodal-tDCS had an influence on non-verbal fluency but neither on verbal fluency, nor on picture naming and translation. EEG measures revealed significant interactions between Language and Stimulation on picture naming around 380 ms post-stimulus onset and Translation direction and Stimulation on translation around 530 ms post-stimulus onset. These effects suggest that L2 phonological retrieval and phoneme encoding are spatially and temporally segregated in the brain. We conclude that anodal-tDCS stimulation has an effect at a neural level on phonological processes and, critically, that DLPFC-mediated activation is a constraint on language production specifically in L2.
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Keyword:
Neuroscience
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6068342/ https://doi.org/10.3389/fnins.2018.00490
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Impairment of both languages in late bilinguals with dementia of the Alzheimer type
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Language specificity of lexical-phonological therapy in bilingual aphasia: A clinical and electrophysiological study
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Balanced bilinguals favor lexical processing in their opaque language and conversion system in their shallow language
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Partly segregated cortico-subcortical pathways support phonologic and semantic verbal fluency: A lesion study
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Auditory-verbal analysis in aphasia
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In: Aphasiology, vol. 30, no. 12, pp. 1483-1511 (2016)
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Impairment of both languages in late bilinguals with dementia of the Alzheimer type
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Language context modulates reading route: an electrical neuroimaging study. ...
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Auditory perceptual decision-making based on semantic categorization of environmental sounds
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In: http://infoscience.epfl.ch/record/197440 (2014)
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