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Accepted (AM)Open Access (License Unspecified), Open
Journal article
The importance of multiple assessments of object knowledge in semantic dementia: The case of the familiar objects task
Neurocase, v 17(1)
26 Jan 2011
PMCID: PMC3303167
PMID: 20812137
Abstract
Semantic dementia (SD) is characterized by a dramatic loss of conceptual knowledge about the meaning of words and the identity of objects. Previous research has suggested that SD patients' knowledge is differentially influenced by the disease and may decline at different degrees depending on a patient's everyday familiarity with certain items. However, no study has examined (a) semantic knowledge deterioration and (b) the potential significance of autobiographical experience for the maintenance of object concepts in the same cohort of SD patients by using comprehensive assessments of different aspects of object knowledge across an experience-based, distributed semantic memory network. Here, we tested four SD patients and three Alzheimer's disease (AD) control patients using a range of tasks - including naming, gesture generation, and autobiographical knowledge - with personally familiar objects or perceptually similar or different object analogs. Our results showed dissociations between performance on naming relative to other assessments of object knowledge between SD and AD patients, though we did not observe a reliable familiar objects advantage. We discuss different factors that may account for these findings, as well as their implications for research on SD.
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Details
- Title
- The importance of multiple assessments of object knowledge in semantic dementia: The case of the familiar objects task
- Creators
- Evangelia G. Chrysikou - University of PennsylvaniaTania Giovannetti - Temple UniversityDenene M. Wambach - Drexel UniversityAbigail C. Lyon - Hospital of the University of PennsylvaniaMurray Grossman - Hospital of the University of PennsylvaniaDavid J. Libon - Temple University
- Publication Details
- Neurocase, v 17(1)
- Publisher
- Taylor & Francis Group
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Arts and Sciences
- Web of Science ID
- WOS:000286819300006
- Scopus ID
- 2-s2.0-78751627052
- Other Identifier
- 991019168659304721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Clinical Neurology
- Psychiatry
- Psychology