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Semantic Feature Disturbance in Alzheimer Disease: Evidence from an Object Decision Task
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Alzheimer's disease is associated with distinctive semantic feature loss
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Lexical-semantic representation in bilingual aphasia: Findings from semantic priming and cognate repetition priming
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The Influence of Dopamine on Automatic and Controlled Semantic Activation in Parkinson's Disease
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Effect of aging on learning new names and descriptions for objects
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The influence of dopamine on automatic and controlled semantic activation in Parkinson's disease.
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Abstract:
Two semantic priming tasks, designed to isolate automatic and controlled semantic activation, were utilized to investigate the impact of dopamine depletion on semantic processing in Parkinson's disease (PD). Seven people with PD (tested whilst on and off levodopa medication) and seven healthy adults participated in the study. The healthy adult participants demonstrated intact automatic and controlled semantic activation. Aberrant controlled semantic activation was observed in the PD group on levodopa; however, automatic semantic activation was still evident. In contrast, automatic semantic activation was not evident in the PD group off levodopa. These results further clarify the impact of PD on semantic processing, demonstrating that dopamine depletion can cause disturbances in both automatic and controlled semantic activation.
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Keyword:
2728 Clinical Neurology; 2738 Psychiatry and Mental health; 2801 Neuroscience (miscellaneous); Clinical Neurology; Neurosciences & Neurology
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URL: https://espace.library.uq.edu.au/view/UQ:269357
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Investigation of the non-markovity spectrum as a cognitive processing measure of deep brain microelectrode recordings
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Decreased semantic competitive inhibition in Parkinson's disease: Evidence from an investigation of word search performance
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Bilingualism and aging: reversal of the cognate advantage on older bilingual adults
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Semantic activation in Parkinson's disease patients on and off levodopa
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Hemispheric contributions to semantic activation: A divided visual field and event-related potential investigation of time-course.
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Verbal fluency, semantics, context and symptom complexes in schizophrenia
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Bilingualism and aging: Reversal of the cognate advantage in older bilingual adults
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Impaired semantic inhibition during lexical ambiguity repetition in parkinson's disease
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The influence of aging and aphasia on bilingual semantic organization
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