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1
The Influence of Dopamine on Automatic and Controlled Semantic Activation in Parkinson's Disease
Arnott, Wendy L.; Copland, David A.; Chenery, Helen J.. - : SAGE-Hindawi Access to Research, 2011
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2
The influence of dopamine on automatic and controlled semantic activation in Parkinson's disease.
Arnott, Wendy L.; Copland, David A.; Chenery, Helen J.. - : Hindawi Publishing, 2011
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3
Decreased semantic competitive inhibition in Parkinson's disease: evidence from an investigation of word search performance
In: International journal of speech language pathology. - Abingdon : Informa Healthcare 12 (2010) 5, 437-445
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4
Decreased semantic competitive inhibition in Parkinson's disease: Evidence from an investigation of word search performance
Abstract: Aberrant semantic competitive inhibition has been reported in Parkinson’s disease (PD). Whether PD-related alterations cause an increase or a decrease in lateral inhibition, however, remains unclear. Accordingly, the present study aimed to examine semantic inhibition during lexical-semantic processing in non-demented people with PD. Twenty-two people with PD and 18 matched controls completed a computerized word search task in which both the relationship between the background items and the target (related or unrelated) and the search type (open e.g., any dog or closed e.g., collie) were manipulated. It was hypothesized that decreased semantic inhibition would be evidenced by abnormally short response times for open searches among words related to the target, while increased inhibition would lead to abnormally long response times. Analysis of the results revealed that control participants performed open searches faster for unrelated vs related word lists. In contrast, the PD group recorded similar response times regardless of background items. Hence, the present findings are consistent with the notion of decreased semantic competitive inhibition in PD and suggest that an impaired ability to inhibit unwanted information during lexical retrieval may underlie observed deficits on semantic tasks such as verbal fluency. ©2010 The Speech Pathology Association of Australia Limited.
Keyword: 1203 Language and Linguistics; 2733 Otorhinolaryngology; 2912 LPN and LVN; 2922 Research and Theory; 3616 Speech and Hearing; Activation; Cognitive-linguistic interactions; Deficits; Expressive Language; Language Processing; Models; Parkinson's disease; Retrieval; Sentence Comprehension; Speed; Task; Verbal Fluency
URL: https://espace.library.uq.edu.au/view/UQ:218606
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5
Semantic activation in Parkinson's disease patients on and off levodopa
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6
Priming of semantic features in Parkinson's disease
In: Brain & language. - Orlando, Fla. [u.a.] : Elsevier 99 (2006) 1-2, 100
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7
Priming of semantic features in Parkinson’s disease
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8
Morphosyntactic and syntactic priming: an investigation of underlying processing mechanisms and the effects of Parkinson's disease
In: Journal of neurolinguistics. - Orlando, Fla. : Elsevier 18 (2005) 1, 1-28
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9
Morphosyntactic and syntactic priming : an investigation of underlying processing mechanisms and the effects of Parkinson's disease
In: Journal of neurolinguistics. - Orlando, Fla. : Elsevier 18 (2005) 1, 1-28
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10
Morphosyntactic and syntactic priming: an investigation of underlying processing mechanisms and the effects of Parkinson’s disease
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11
Coordinate and Attribute Semantic Priming in People with Parkinson’s Disease
Chenery, Helen J.; Copland, David A.; Murdoch, Bruce E.. - : Cambridge University Press, 2004
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12
Semantic priming in Parkinson's disease: Evidence for delayed spreading activation
Arnott, Wendy L.; Chenery, Helen J.; Murdoch, Bruce E.. - : Psychology Press, 2001
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13
Narrative discourse in multiple sclerosis : an investigation of conceptual structure
In: Aphasiology. - London [u.a.] : Routledge, Taylor & Francis Group 11 (1997) 10, 969-991
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