Analysis of abstract and concrete word processing in persons with aphasia and age-matched neurologically healthy adults using fMRI.
Analysis of abstract and concrete word processing in persons with aphasia and age-matched neurologically healthy adults using fMRI.
复制标题
使用功能磁共振成像分析失语症患者和年龄匹配的神经健康成年人的抽象和具体文字处理。
DOI：
10.1080/13554794.2013.770881
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发表时间：
2013
期刊：
影响因子：
0.8
通讯作者：
Kiran,Swathi
中科院分区：
文献类型：
--
作者：
Sandberg,Chaleece;Kiran,Swathi
具体性效应在正常人群和语言障碍人群中都存在。研究表明，抽象和具体的概念会在健康的年轻人中引发不同的神经激活模式，但在失语症患者中这一点还没有记录在案。三名PWA和三名年龄匹配的对照组在处理抽象和具体单词的同时进行了fMRI扫描。与现有的抽象和具体字加工理论一致，抽象字词在言语区域被激活，而具体字词另外激活多通道联想区。在抽象词和具体词之间，PWA显示出比年龄匹配的控制者更大的神经激活差异，这可能是由于夸大的具体性效应所致。
The concreteness effect occurs in both normal and language-disordered populations. Research suggests that abstract and concrete concepts elicit differing neural activation patterns in healthy young adults, but this is undocumented in persons with aphasia (PWA). Three PWA and three age-matched controls were scanned using fMRI while processing abstract and concrete words. Consistent with current theories of abstract and concrete word processing, abstract words elicited activation in verbal areas, whereas concrete words additionally activated multimodal association areas. PWA show greater differences in neural activation than age-matched controls between abstract and concrete words, possibly due to an exaggerated concreteness effect.