What matters in semantic feature processing for persons with stroke-aphasia: Evidence from an auditory concept-feature verification task.
What matters in semantic feature processing for persons with stroke-aphasia: Evidence from an auditory concept-feature verification task.
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DOI：
10.1080/02687038.2014.913769
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发表时间：
2014
期刊：
影响因子：
2
通讯作者：
Antonucci SM
中科院分区：
文献类型：
--
作者：
Antonucci SM
对象概念域（活体与非活体）和它们的基本特征结构之间的关系是关于健康个体和一些患有单纯疱疹性脑炎、语义性痴呆和阿尔茨海默病的神经心理障碍的个体的语义处理的频繁调查领域。然而，这种关系在中风失语症（PWA）患者中的研究较少，尽管许多中风后命名障碍的治疗都是基于语义特征线索的使用。作为一个更大的调查的语义特征加工的影响命名为PWA的一部分，本研究探讨了PWA确认对象概念和相关的语义特征之间的关系的能力。15名母语为英语、患有中风后失语症的右手人士通过按下按钮来回答“是”或“否”的特征验证问题，这些问题旨在探讨概念域与特征类型和独特性之间的关系。PWA更准确，更快地确认概念特征关系时，功能包含功能/动作，而不是视觉感知，概念的信息，当功能是独特的概念，而不是共享。真实性（即，准确性）的概念特征配对被证明是有区别地影响生活与非生活的概念。在领域内，只有非生命的概念被验证更准确，更快时，配对是真的（而不是假的）。域之间，真正的非生命的概念特征配对更准确，更快地验证比真正的生活概念特征配对。此外，在准确性方面，还观察到失语症严重程度与对错误概念-特征配对的准确性和反应速度之间存在相关性。研究结果的语义处理的方式与PWA探测，以及提供初步信息的PWA的反应不同类型的语义信息的生活与非生活的概念。事实上，PWA表现出不成比例的困难，对某些类型的语义信息的反应也表明了初步的影响，不同类型的语义线索的效用，在语义为基础的治疗词检索障碍。
The relationship between object concept domains (living vs. nonliving) and their underlying feature structures is a frequent area of investigation regarding semantic processing in healthy individuals and some individuals with neuropsychological impairment resulting from herpes simplex encephalitis, semantic dementia and Alzheimer's disease. However, this relationship has been less well-investigated in persons with stroke-aphasia (PWA), even though many treatments for anomia following stroke are predicated on the use of semantic feature cues. As part of a larger investigation into the influence of semantic feature processing on naming for PWA, this study examined the ability of PWA to confirm the relations between object concepts and associated semantic features. 15 native English-speaking, right handed individuals with post-stroke-aphasia responded yes or no via button press to feature-verification questions designed to probe the relationships between concept domain and feature type and distinctiveness. PWA were more accurate and quicker to confirm concept-feature relationships when features contained function/action, rather than visual-perceptual, information about concepts and when features were distinctive to concepts rather than shared. The truthfulness (i.e., veracity) of concept-feature pairings was demonstrated to differentially affect living versus nonliving concepts. Within domain, only nonliving concepts were verified more accurately and more quickly when pairings were true (rather than false). Between domains, true nonliving concept-feature pairings were more accurately and more quickly verified than true living concept-feature pairings. Also with respect to veracity, correlations were observed between aphasia severity and accuracy and speed of response to false concept-feature pairings. Findings have implications for the way in which semantic processing is probed with PWA, as well as providing preliminary information regarding responsivity of PWA to differing types of semantic information for living versus nonliving concepts. The fact that PWA demonstrated disproportionate difficulty responding to certain types of semantic information also suggests preliminary implications for the utility of different types of semantic cues in semantically-based treatments for word retrieval impairment.
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