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Semantic Variant Primary Progressive Aphasia: Practical Recommendations for Treatment from 20 Years of Behavioural Research
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In: Brain Sci (2021)
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A MEG study of the neural substrates of semantic processing in semantic variant primary progressive aphasia
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Abstract:
Despite a well-documented pattern of semantic memory (SM) impairment, the patterns of brain activation during semantic processing in svPPA still remain poorly understood. The current study aimed to investigate the neural substrates of residual semantic processing in the context of this significant but selective SM impairment, through the case study of one svPPA patient. One svPPA patient (EC) and six elderly controls carried out a general-level semantic categorization task (biological and manufactured objects) while their brain activity was recorded using magnetoencephalography (MEG). Despite similar behavioral performance, EC showed hyperactivation of the left inferior temporal gyrus (ITG) and right anterior temporal lobe (ATL) relative to controls. This suggests that periatrophic regions within the ATL region may support preserved semantic abilities in svPPA. These results thus contribute to our understanding of the brain regions which are recruited to compensate for bilateral atrophy of the ATL and ensure residual semantic processing in svPPA.
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Keyword:
Functional neuroimaging; Semantic memory; Semantic variant primary progressive aphasia; Single-case study
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URL: https://doi.org/10.1080/13554794.2019.1631853
http://hdl.handle.net/1866/22358
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A SEMantic and EPisodic Memory Test (SEMEP) Developed within the Embodied Cognition Framework: Application to Normal Aging, Alzheimer's Disease and Semantic Dementia
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In: ISSN: 1664-1078 ; Frontiers in Psychology ; https://hal.archives-ouvertes.fr/hal-02131641 ; Frontiers in Psychology, Frontiers, 2017, 8, pp.1493. ⟨10.3389/fpsyg.2017.01493⟩ (2017)
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Conception or *conceivation? The processing of derivational morphology in semantic dementia
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Regularity and beyond: Impaired production and comprehension of inflectional morphology in semantic dementia
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Normative Data for the Pyramids and Palm Trees Test in the Quebec-French Population
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