Visual search patterns in semantic dementia show paradoxical facilitation of binding processes
نویسندگان
چکیده
منابع مشابه
Impairments in top down attentional processes in right parietal patients: Paradoxical functional facilitation in visual search
It is well known that the right posterior parietal cortex (PPC) is involved in attentional processes, including binding features. It remains unclear whether PPC is implicated in top-down and/or bottom-up components of attention. We aim to clarify this by comparing performance of seven PPC patients and healthy controls (HC) in a visual search task involving a conflict between top-down and bottom...
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Objective: To study episodic and semantic memory for faces and other non-verbal information in semantic dementia (SD). Background: Semantic memory impaired in the rare diagnosis of SD by definition, including knowledge about wellknown persons and their appearance. Episodic memory is held to be better preserved. Methods: Two computerized face recognition tests were administered, one measuring ep...
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This study aims at presenting a computational model of visual search including a visual, a semantic and a memory process in order to simulate human behavior during information seeking. We implemented the memory process, which is the most important part of the model based on the Variable Memory Model (Arani, Karwan, & G., 1984; Horowitz, 2006). To compare model and humans, we designed two experi...
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Patterns of brain atrophy in frontotemporal dementia and semantic dementia.
OBJECTIVE To identify and compare the patterns of cerebral atrophy associated with two clinical variants of frontotemporal lobar degeneration (FTLD): frontotemporal dementia (FTD) and semantic dementia (SemD). METHODS Twenty patients with FTLD were classified as having FTD (N = 8) or SemD (N = 12) based on current clinical criteria. Both groups showed a similar spectrum of behavioral abnormal...
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ژورنال
عنوان ژورنال: Neuropsychologia
سال: 2011
ISSN: 0028-3932
DOI: 10.1016/j.neuropsychologia.2010.12.039