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Alterations to dual stream connectivity predicts response to aphasia therapy following stroke
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Cross-modal emotion recognition and autism-like traits in typically developing children
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An automated approach to examining pausing in the speech of people with dementia
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The influence of contextual constraint on verbal selection mechanisms and its neural correlates in Parkinson’s disease
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Alterations to dual stream connectivity predicts response to aphasia therapy following stroke
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The Suppression of Irrelevant Semantic Representations in Parkinson’s Disease
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Abstract:
The impairment of lexical-semantic inhibition mechanisms in Parkinson’s disease (PD) remains a source of contention. In order to observe whether people with PD are able to suppress irrelevant semantic information during picture naming, the present study employed an object-based negative priming paradigm with 16 participants with PD and 13 healthy controls. The task required participants to name a red target image while ignoring a superimposed, green distractor image. The semantic relationship between the distractor image and the target image of the subsequent trial was manipulated, such that the distractor image was identical, semantically related, or semantically unrelated to said target image. The PD group and the control group were slower in naming a target image that had previously served as a distractor image, relative to naming a target image that was unrelated to the previous distractor image. Thus, a negative priming effect was present in both groups. Furthermore, no significant difference in the magnitude of this effect was observed between the control and PD groups. When considered in the context of existing literature surrounding negative priming in PD, these results suggest that inhibition is subserved by multiple, domain-specific mechanisms and that the inhibitory processing of visual-semantic stimuli is intact in PD.
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Keyword:
Neuroscience
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URL: https://doi.org/10.3389/fnhum.2018.00511 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6349768/ http://www.ncbi.nlm.nih.gov/pubmed/30723399
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Functional correlates of strategy formation and verbal suppression in Parkinson's disease
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Semantic processing in children with cochlear implants: evidence from event-related potentials
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Conversational trouble and repair in dementia: revision of an existing coding framework
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The suppression of irrelevant semantic representations in Parkinson's Disease
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Reading development in children with cochlear implants who communicate via spoken language: A psycholinguistic investigation
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Spelling in children with cochlear implants: evidence of underlying processing differences
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Lexical ambiguity resolution during sentence processing in Parkinson’s disease: An event-related potential study
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Semantic Feature Disturbance in Alzheimer Disease: Evidence from an Object Decision Task
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