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  The relationship between response consistency in picture naming and storage impairment in people with semantic variant primary progressive aphasia

van Scherpenberg, C., Fieder, N., Savage, S. A., & Nickels, L. (2019). The relationship between response consistency in picture naming and storage impairment in people with semantic variant primary progressive aphasia. Neuropsychology, 33(1), 13-34. doi:10.1037/neu0000485.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0004-C521-8 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0005-52E8-9
Genre: Zeitschriftenartikel

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 Urheber:
van Scherpenberg, Cornelia1, 2, Autor           
Fieder, Nora2, Autor
Savage, Sharon A.3, Autor
Nickels, Lyndsey2, Autor
Affiliations:
1Department of General and Typological Linguistics, Ludwig Maximilians University Munich, Germany, ou_persistent22              
2ARC Centre of Excellence in Cognition and its Disorders, Macquarie University, Sydney, Australia, ou_persistent22              
3School of Psychology, University of Exeter, United Kingdom, ou_persistent22              

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Schlagwörter: Consistency; Naming; Semantic features; Semantic variant primary progressive aphasia; Storage impairment
 Zusammenfassung: Objective: The progressive loss of stored knowledge about word meanings in semantic variant primary progressive aphasia (svPPA) has been attributed to an amodal "storage" deficit of the semantic system. Performance consistency has been proposed to be a key characteristic of storage deficits but has not been examined in close detail and larger participant cohorts. Method: We assessed whether 10 people with svPPA showed consistency in picture naming across 3 closely consecutive sessions. We examined item-by-item consistency of naming accuracy and specific error types, while controlling for the effects of word-related variables such as word frequency, familiarity, and age of acquisition. Results: Participants were very consistent in their accurate and inaccurate responses over and above any effects of the word-related variables. Analyses of error types that compared consistency of semantic errors, correct responses, and other error types (e.g., phonologically related errors, unrelated errors) revealed lower consistency. Conclusions: Our findings support the assumption that semantic features constituting semantic representations of objects are progressively lost in people with svPPA and are therefore consistently unavailable during naming. Variability in the production of error types occurs when distinctive features of an object are lost, resulting in the selection of semantically or visually similar items or in the failure to select an item and a response omission. The assessment of performance consistency sheds light on the underlying impairment of people with semantic deficits (semantic storage vs. access deficit). This can support the choice of an appropriate treatment technique to maintain or reteach semantic information.

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Sprache(n): eng - English
 Datum: 2018-05-032018-01-032018-06-012018-10-042019-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1037/neu0000485
Anderer: Epub 2018
PMID: 30284872
 Art des Abschluß: -

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Projektname : -
Grant ID : APP1037746
Förderprogramm : Australia Program Grant
Förderorganisation : National Health and Medical Research Council (NHMRC)
Projektname : -
Grant ID : -
Förderprogramm : Centre of Excellence in Cognition and its Disorders Memory Program (CE110001021)
Förderorganisation : Australian Research Council (ARC)
Projektname : -
Grant ID : APP1103258
Förderprogramm : NHMRC Senior Research Fellowship
Förderorganisation : National Health and Medical Research Council (NHMRC)
Projektname : -
Grant ID : -
Förderprogramm : -
Förderorganisation : Berlin School of Mind and Brain
Projektname : -
Grant ID : -
Förderprogramm : Travel Grant
Förderorganisation : German National Academic Foundation
Projektname : -
Grant ID : FT120100102
Förderprogramm : Australian Research Council Future Fellowship
Förderorganisation : Australian Research Council

Quelle 1

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Titel: Neuropsychology
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Philadelphia, PA : American Psychological Association (PsycARTICLES)
Seiten: - Band / Heft: 33 (1) Artikelnummer: - Start- / Endseite: 13 - 34 Identifikator: ISSN: 0894-4105
CoNE: https://pure.mpg.de/cone/journals/resource/954925559517