1 |
Semantic Feature Disturbance in Alzheimer Disease: Evidence from an Object Decision Task
|
|
|
|
BASE
|
|
Show details
|
|
3 |
Alzheimer's disease is associated with distinctive semantic feature loss
|
|
|
|
Abstract:
A central topic of discussion in the exploration of semantic disturbance in Alzheimer's disease (AD) concerns the relative contribution of semantic content (e.g., semantic features) and semantic process. Studies have suggested that semantic dysfunction in AD is the result of deficits to either semantic process, semantic content or both. Studies that have supported the loss of semantic content have been criticised for their use of verbal stimuli and cognitively challenging experimental tasks. The current study used a novel version of the yes no recognition memory task to compare the processing of distinctive and non-distinctive features in participants with AD whilst controlling the cognitive demands of the task. The task involved five conditions which denoted the relationship between the items in the test and study phase. A 'non-distinctive' and a 'distinctive' condition were included where non-distinctive and distinctive semantic features were manipulated between study and test, respectively. Task accuracy of participants with AD decreased relative to control participants when distinctive features were manipulated between the study and test phase of the experiment. There was no significant difference between groups when non-distinctive features were manipulated. These findings provide evidence to support the loss of semantic content in AD. (C) 2013 Elsevier Ltd. All rights reserved.
|
|
Keyword:
2802 Behavioral Neuroscience; 2805 Cognitive Neuroscience; 3205 Experimental and Cognitive Psychology; Alzheimer's disease; Mini Mental State; Semantic content; Semantic features; Semantic process
|
|
URL: https://espace.library.uq.edu.au/view/UQ:312068
|
|
BASE
|
|
Hide details
|
|
4 |
Lexical-semantic representation in bilingual aphasia: Findings from semantic priming and cognate repetition priming
|
|
|
|
BASE
|
|
Show details
|
|
5 |
The Influence of Dopamine on Automatic and Controlled Semantic Activation in Parkinson's Disease
|
|
|
|
BASE
|
|
Show details
|
|
6 |
Effect of aging on learning new names and descriptions for objects
|
|
|
|
BASE
|
|
Show details
|
|
7 |
The influence of dopamine on automatic and controlled semantic activation in Parkinson's disease.
|
|
|
|
BASE
|
|
Show details
|
|
8 |
Investigation of the non-markovity spectrum as a cognitive processing measure of deep brain microelectrode recordings
|
|
|
|
BASE
|
|
Show details
|
|
10 |
Decreased semantic competitive inhibition in Parkinson's disease: Evidence from an investigation of word search performance
|
|
|
|
BASE
|
|
Show details
|
|
13 |
Bilingualism and aging: reversal of the cognate advantage on older bilingual adults
|
|
|
|
BASE
|
|
Show details
|
|
14 |
Semantic activation in Parkinson's disease patients on and off levodopa
|
|
|
|
BASE
|
|
Show details
|
|
15 |
Hemispheric contributions to semantic activation: A divided visual field and event-related potential investigation of time-course.
|
|
|
|
BASE
|
|
Show details
|
|
16 |
Verbal fluency, semantics, context and symptom complexes in schizophrenia
|
|
|
|
BASE
|
|
Show details
|
|
17 |
Bilingualism and aging: Reversal of the cognate advantage in older bilingual adults
|
|
|
|
BASE
|
|
Show details
|
|
18 |
Impaired semantic inhibition during lexical ambiguity repetition in parkinson's disease
|
|
|
|
BASE
|
|
Show details
|
|
20 |
The influence of aging and aphasia on bilingual semantic organization
|
|
|
|
BASE
|
|
Show details
|
|
|
|