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1
Semantic activation in Parkinson's disease patients on and off levodopa
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2
Hemispheric contributions to semantic activation: A divided visual field and event-related potential investigation of time-course.
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3
Dopaminergic neuromodulation of semantic processing: A 4-T fMRI study with levodopa
Copland, David A.; McMahon, Katie L.; Silburn, Peter A.. - : Oxford University Press., 2009
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4
Verbal fluency, semantics, context and symptom complexes in schizophrenia
Vogel, Adam P.; Chenery, Helen J.; Dart, Catriona M.. - : Springer New York LLC, 2009
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5
Impaired semantic inhibition during lexical ambiguity repetition in parkinson's disease
Copland, David A.; Sefe, Gameli; Ashley, Jane. - : Elsevier Masson, 2009
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6
The basal ganglia circuits, dopamine, and ambiguous word processing: A neurobiological account of priming studies in Parkinson's disease
Chenery, Helen J.; Angwin, Anthony J.; Copland, David A.. - : Cambridge University Press, 2008
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7
Transdermal nicotine modulates strategy-based attentional semantic processing in non-smokers
Holmes, Anna D.; Chenery, Helen J.; Copland, David A.. - : Cambridge University Press, 2008
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8
Neural correlates of semantic priming for ambiguous words: An event-related fMRI study
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9
The speed of lexical activation is altered in Parkinson's disease
Angwin, Anthony J.; Chenery, Helen J.; Copland, David A.. - : Taylor & Francis Inc, 2007
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10
Self-paced reading and sentence comprehension in Parkinson's disease
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11
Summation of semantic priming and complex sentence comprehension in Parkinson's disease
Abstract: Research has suggested that the integrity of semantic processing may be compromised in Parkinson's disease (PD), which may account for difficulties in complex sentence comprehension. In order to investigate the time course and integrity of semantic activation in PD, 20 patients with PD and 23 healthy controls performed a lexical decision task based on the multi-priming paradigm. Semantic priming effects were measured across stimulus onset asynchronies of 250 ms, 600 ms, and 1200 ms. Further, PD participants performed an auditory comprehension task. The results revealed significantly different patterns of semantic priming for the PD group at the 250-ms and 1200-ms SOAs. In addition, a delayed time course of semantic activation was evident for PD patients with poor comprehension of complex sentences. These results provide further support to suggest that both automatic and controlled aspects of semantic activation may be compromised in PD. Furthermore, the results also suggest that some sentence comprehension deficits in PD may be related to a reduction in information processing speed.
Keyword: 110321 Rehabilitation and Therapy (excl. Physiotherapy); 170204 Linguistic Processes (incl. Speech Production and Comprehension); 380302 Linguistic Processes (incl. Speech Production and Comprehension); 730399 Health and support services not elsewhere classified; C1; Degenerative disease; Disorders of the nervous system; Levodopa; Parkinson's; Parkinson's Disease; Semantic Priming; Sentence Processing; Signal-to-noise ratio
URL: https://espace.library.uq.edu.au/view/UQ:75314
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12
Hemispheric contributions to lexical ambiguity resolution: Evidence from individuals with complex language impairment following left-hemisphere lesions
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13
Discourse priming of homophones in individuals with dominant subcortical lesions, cortical lesions, and Parkinson’s disease
Copland, David A.; Chenery, Helen J.; Murdoch, Bruce E.. - : Psychology Press, 2001
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