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Development of a standard of care for patients with valosin-containing protein associated multisystem proteinopathy.
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In: Orphanet journal of rare diseases, vol 17, iss 1 (2022)
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Family history of FXTAS is associated with age-related cognitive-linguistic decline among mothers with the FMR1 premutation.
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In: Journal of neurodevelopmental disorders, vol 14, iss 1 (2022)
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Cortical microstructure in primary progressive aphasia: a multicenter study.
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In: Alzheimer's research & therapy, vol 14, iss 1 (2022)
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Hippocampal ensembles represent sequential relationships among an extended sequence of nonspatial events.
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In: Nature communications, vol 13, iss 1 (2022)
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Neural dynamics of semantic categorization in semantic variant of primary progressive aphasia.
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Borghesani, V; Dale, CL; Lukic, S; Hinkley, Lbn; Lauricella, M; Shwe, W; Mizuiri, D; Honma, S; Miller, Z; Miller, B; Houde, JF; Gorno-Tempini, ML; Nagarajan, SS. - : eScholarship, University of California, 2021
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Abstract:
Semantic representations are processed along a posterior-to-anterior gradient reflecting a shift from perceptual (e.g., it has eight legs) to conceptual (e.g., venomous spiders are rare) information. One critical region is the anterior temporal lobe (ATL): patients with semantic variant primary progressive aphasia (svPPA), a clinical syndrome associated with ATL neurodegeneration, manifest a deep loss of semantic knowledge. We test the hypothesis that svPPA patients perform semantic tasks by over-recruiting areas implicated in perceptual processing. We compared MEG recordings of svPPA patients and healthy controls during a categorization task. While behavioral performance did not differ, svPPA patients showed indications of greater activation over bilateral occipital cortices and superior temporal gyrus, and inconsistent engagement of frontal regions. These findings suggest a pervasive reorganization of brain networks in response to ATL neurodegeneration: the loss of this critical hub leads to a dysregulated (semantic) control system, and defective semantic representations are seemingly compensated via enhanced perceptual processing.
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Keyword:
2.1 Biological and endogenous factors; Aged; anterior temporal lobe; Aphasia; Basic Behavioral and Social Science; Behavioral and Social Science; Biochemistry and Cell Biology; Brain Disorders; Clinical Research; Female; human; Humans; magnetoencephalography; Male; Mental Health; Middle Aged; Nerve Degeneration; Neurons; neuroscience; Neurosciences; Primary Progressive; primary progressive aphasia; semantic categorization; semantic dementia; semantic variant ppa; Semantics; Temporal Lobe
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URL: https://escholarship.org/uc/item/6s23q3d9
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Resting functional connectivity in the semantic appraisal network predicts accuracy of emotion identification.
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Development of thalamus mediates paternal age effect on offspring reading: A preliminary investigation.
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In: Human brain mapping, vol 42, iss 14 (2021)
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B Cell-Restricted Depletion of Dnmt3a Activates Notch Signaling and Causes Chronic Lymphocytic Leukemia
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In: Blood, vol 138, iss Supplement 1 (2021)
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Comparing two facets of emotion perception across multiple neurodegenerative diseases.
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In: Social cognitive and affective neuroscience, vol 15, iss 5 (2020)
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Amount and delay insensitivity during intertemporal choice in three neurodegenerative diseases reflects dorsomedial prefrontal atrophy.
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Depressive Symptom Profiles Predict Specific Neurodegenerative Disease Syndromes in Early Stages.
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Depressive Symptom Profiles Predict Specific Neurodegenerative Disease Syndromes in Early Stages.
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Deformation-based shape analysis of the hippocampus in the semantic variant of primary progressive aphasia and Alzheimer's disease.
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| 14 |
Graded, multidimensional intra- and intergroup variations in primary progressive aphasia and post-stroke aphasia.
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In: Brain : a journal of neurology, vol 143, iss 10 (2020)
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Regional and hemispheric susceptibility of the temporal lobe to FTLD-TDP type C pathology.
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| 16 |
Amount and delay insensitivity during intertemporal choice in three neurodegenerative diseases reflects dorsomedial prefrontal atrophy.
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| 17 |
A neurophysiological model of speech production deficits in fragile X syndrome.
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In: Brain communications, vol 2, iss 1 (2020)
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The Relationship between Expressive Language Sampling and Clinical Measures in Fragile X Syndrome and Typical Development.
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In: Brain sciences, vol 10, iss 2 (2020)
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Contributions of common genetic variants to risk of schizophrenia among individuals of African and Latino ancestry.
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In: Molecular psychiatry, vol 25, iss 10 (2020)
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Contributions of common genetic variants to risk of schizophrenia among individuals of African and Latino ancestry.
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In: Molecular psychiatry, vol 25, iss 10 (2020)
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