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German Language Adaptation of the NAVS (NAVS-G) and of the NAT (NAT-G): Testing Grammar in Aphasia
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In: Brain Sci (2021)
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Abstract:
Grammar provides the framework for understanding and producing language. In aphasia, an acquired language disorder, grammatical deficits are diversified and widespread. However, the few assessments for testing grammar in the German language do not consider current linguistic, psycholinguistic, and functional imaging data, which have been shown to be crucial for effective treatment. This study developed German language versions of the Northwestern Assessment of Verbs and Sentences (NAVS-G) and the Northwestern Anagram Test (NAT-G) to examine comprehension and production of verbs, controlling for the number and optionality of verb arguments, and sentences with increasing syntactic complexity. The NAVS-G and NAT-G were tested in 27 healthy participants, 15 right hemispheric stroke patients without aphasia, and 15 stroke patients with mild to residual aphasia. Participants without aphasia showed near-perfect performance, with the exception of (object) relative sentences, where accuracy was associated with educational level. In each patient with aphasia, deficits in more than one subtest were observed. The within and between population-groups logistic mixed regression analyses identified significant impairments in processing syntactic complexity at the verb and sentence levels. These findings indicate that the NAVS-G and NAT-G have potential for testing grammatical competence in (German) stroke patients.
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Keyword:
Article
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8069474/ https://doi.org/10.3390/brainsci11040474
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Predicting language recovery in post-stroke aphasia using behavior and functional MRI
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In: Sci Rep (2021)
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Plasticity of Sentence Processing Networks: Evidence from a patient with agrammatic variant of Primary Progressive Aphasia (PPA)
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In: Neurocase (2020)
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Northwestern Anagram Test-Italian (Nat-I) for primary progressive aphasia
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In: Cortex (2019)
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Recovery of offline and online sentence processing in aphasia: Language and domain-general network neuroplasticity
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In: Cortex (2019)
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Neural networks for sentence comprehension and production: an ALE-based meta-analysis of neuroimaging studies
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In: Hum Brain Mapp (2019)
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Verb and sentence processing patterns in healthy Italian participants: Insight from the Northwestern Assessment of Verbs and Sentences (NAVS)
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Word comprehension in temporal cortex and Wernicke area: A PPA perspective
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Verb-argument integration in primary progressive aphasia: Real-time argument access and selection
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In: Neuropsychologia (2019)
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Neurocognitive correlates of category ambiguous verb processing: The single versus dual lexical entry hypotheses
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A nonverbal route to conceptual knowledge involving the right anterior temporal lobe
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Implicit learning and implicit treatment outcomes in individuals with aphasia
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Grammatical Encoding and Learning in Agrammatic Aphasia: Evidence from Structural Priming
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Tracking sentence comprehension: Test-retest reliability in people with aphasia and unimpaired adults
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How the brain processes different dimensions of argument structure complexity: Evidence from fMRI
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Assessing Syntactic Deficits in Chinese Broca's aphasia using the Northwestern Assessment of Verbs and Sentences-Chinese (NAVS-C)
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Training Pseudoword Reading in Acquired Dyslexia: A Phonological Complexity Approach
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Primary progressive aphasia and the evolving neurology of the language network
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Implicit and Explicit Learning in Individuals with Agrammatic Aphasia
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