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1
Disorders of representation and control in semantic cognition : Effects of familiarity, typicality, and specificity
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2
Disorders of representation and control in semantic cognition: Effects of familiarity, typicality, and specificity
Abstract: We present a case-series comparison of patients with cross-modal semantic impairments consequent on either (a) bilateral anterior temporal lobe atrophy in semantic dementia (SD) or (b) left-hemisphere fronto-parietal and/or posterior temporal stroke in semantic aphasia (SA). Both groups were assessed on a new test battery designed to measure how performance is influenced by concept familiarity, typicality and specificity. In line with previous findings, performance in SD was strongly modulated by all of these factors, with better performance for more familiar items (regardless of typicality), for more typical items (regardless of familiarity) and for tasks that did not require very specific classification, consistent with the gradual degradation of conceptual knowledge in SD. The SA group showed significant impairments on all tasks but their sensitivity to familiarity, typicality and specificity was more variable and governed by task-specific effects of these factors on controlled semantic processing. The results are discussed with reference to theories about the complementary roles of representation and manipulation of semantic knowledge.
Keyword: Article
URL: https://doi.org/10.1016/j.neuropsychologia.2015.04.015
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4582808/
http://www.ncbi.nlm.nih.gov/pubmed/25934635
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3
'Presemantic' cognition in semantic dementia : six deficits in search of an explanation
In: Journal of cognitive neuroscience. - Cambridge, Mass. : MIT Press Journals 18 (2006) 2, 169-183
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OLC Linguistik
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4
Natural selection : the impact of semantic impairment on lexical and object decision
In: Cognitive neuropsychology. - Abingdon : Routledge, Taylor & Francis Group 21 (2004) 2-4, 331-352
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OLC Linguistik
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5
Structure and deterioration of semantic memory : a neuropsychological and computational investigation
In: Psychological review. - Washington, DC [u.a.] : American Psychological Association 111 (2004) 1, 205-235
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6
A duck with four legs : investigating the structure of conceptual knowledge using picture drawing in semantic dementia
In: Cognitive neuropsychology. - Abingdon : Routledge, Taylor & Francis Group 20 (2003) 1, 27-47
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7
A duck with four legs: Investigating the structure of conceptual knowledge using picture drawing in semantic dementia
In: Cognitive neuropsychology. - Abingdon : Routledge, Taylor & Francis Group 20 (2003) 1, 27-48
OLC Linguistik
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8
Object recognition under semantic impairment : the effects of conceptual regularities on perceptual decisions
In: Language and cognitive processes. - Abingdon : Routledge, Taylor & Francis Group 18 (2003) 5-6, 625-662
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