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Functional Brain Networks and Verbal Fluency in Healthy Ageing ...
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Verbal Fluency in Metabolic Syndrome
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In: Brain Sciences; Volume 12; Issue 2; Pages: 255 (2022)
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Как билингвизм влияет на объем словарного запаса у старших дошкольников? ; How Does Bilingualism Affect the Volume of Vocabulary in Senior Preschoolers?
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Mindfulness Training in Dialectical Behavior Therapy Investigation on Brain Activity by NIRS ...
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Manual praxis and language-production networks, and their links to handedness ...
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“Hard to Say, Hard to Understand, Hard to Live”: Possible Associations between Neurologic Language Impairments and Suicide Risk
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In: Brain Sciences; Volume 11; Issue 12; Pages: 1594 (2021)
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Manual praxis and language-production networks, and their links to handedness
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In: Cortex, 140 (2021)
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Abstract:
While Liepmann was one of the first researchers to consider a relationship between skilled manual actions (praxis) and language for tasks performed “freely from memory”, his primary focus was on the relations between the organization of praxis and left-hemisphere dominance. Subsequent attempts to apply his apraxia model to all cases he studied – including his first patient, a “non-pure right-hander” treated as an exception – left the praxis-handedness issue unresolved. Modern neuropsychological and recent neuroimaging evidence either showed closer associations of praxis and language, than between handedness and any of these two functions, or focused on their dissociations. Yet, present-day developments in neuroimaging and statistics allow us to overcome the limitations of the earlier work on praxis-language-handedness links, and to better quantify their interrelationships. Using functional magnetic resonance imaging (fMRI), we studied tool use pantomimes and subvocal word generation in 125 participants, including righthanders (NRH = 52), ambidextrous individuals (mixedhanders; NMH = 31), and lefthanders (NLH = 42). Laterality indices were calculated both in two critical cytoarchitectonic maps, and 180 multi-modal parcellations of the human cerebral cortex, using voxel count and signal intensity, and the most relevant regions of interest and their networks were further analyzed. We found that atypical organization of praxis was present in all handedness groups (RH = 25.0%, MH = 22.6%; LH = 45.2%), and was about two and a half times as common as atypical organization of language (RH = 3.8%; MH = 6.5%; LH = 26.2%), contingent on ROI selection/LI-calculation method. Despite strong associations of praxis and language, regardless of handedness and typicality, dissociations of atypically represented praxis from typical left-lateralized language were common (~20% of cases), whereas the inverse dissociations of atypically represented language from typical left-lateralized praxis were very rare (in ~2.5% of all cases). The consequences of the existence of such different phenotypes for theoretical accounts of manual praxis, and its links to language and handedness are modeled and discussed.
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Keyword:
Dissociation; Functional asymmetries; Hand dominance; Interrelations; Lateralization; Segregation; Tool use gestures; Verbal fluency
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URL: https://hdl.handle.net/20.500.11850/489274
https://doi.org/10.3929/ethz-b-000489274
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Support for a novel, simple method for calculating word frequency of output on language production tasks ...
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Support for a novel, simple method for calculating word frequency of output on language production tasks ...
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Psychiatric symptoms are differentially associated with verbal fluency performance in patients with schizophrenia and affective disorders ...
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Psychiatric symptoms are differentially associated with verbal fluency performance in patients with schizophrenia and affective disorders ...
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Manual praxis and language-production networks: An fMRI dataset ...
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The Author Naming Task: A newly-proposed measure for assessing print exposure ...
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Manual praxis and language-production networks, and their links to handedness
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In: Cortex ; 140 (2021). - S. 110-127. - Elsevier. - ISSN 0010-9452. - eISSN 1973-8102 (2021)
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Verbal Fluency Tasks: Influence of Age, Gender, and Education and Normative Data for the Spanish Native Adult Population.
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Action verbal fluency in parkinson’s patients ; Fluência verbal de ação em pacientes com doença de Parkinson
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Intervención en el control inhibitorio en niños con y sin trastorno de lenguaje dentro del aula
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Mindfulness Training in Dialectical Behavior Therapy Investigation on Brain Activity by NIRS
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Does the cerebellar sequential theory explain spoken language impairments? A literature review
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In: ISSN: 0269-9206 ; EISSN: 1464-5076 ; Clinical Linguistics & Phonetics ; https://hal.univ-lorraine.fr/hal-03172052 ; Clinical Linguistics & Phonetics, Taylor & Francis, 2020, 35 (4), pp.296 - 309. ⟨10.1080/02699206.2020.1745285⟩ (2020)
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