REVERSAL OF THE CONCRETENESS EFFECT IN A PATIENT WITH SEMANTIC DEMENTIA
REVERSAL OF THE CONCRETENESS EFFECT IN A PATIENT WITH SEMANTIC DEMENTIA
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DOI：
10.1080/02643299408251987
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发表时间：
1994-12-01
影响因子：
3.4
通讯作者：
COSLETT, HB
中科院分区：
文献类型：
--
作者：
BREEDIN, SD;SAFFRAN, EM;COSLETT, HB
与抽象词相比，正常受试者更善于识别和记忆具体词（具体性效应）。 我们目前的数据对病人，糖尿病，谁表现出相反的模式。 由于颞叶的萎缩性变化，特别是在左侧，DM的语义逐渐丧失。 他的语义障碍主要涉及客体术语，相对较少的抽象名词和动词意义的大部分方面。 DM表现出的优势，抽象的话在广泛的任务（如生产的定义，同义判断）。 这些数据挑战的帐户，属性的具体性效果的数量优势的基础概念表示的水平。 我们认为，抽象和具体的概念之间存在质的差异，特别是，具体的概念更依赖于知觉属性，不成比例地损害DM。 我们进一步提出，语义表征的知觉成分与颞叶下叶的结构有关。
Normal subjects are better at identifying and remembering concrete as compared to abstract words (the concreteness effect). We present data on a patient, DM, who shows the opposite pattern. DM has a progressive semantic loss due to atrophic changes in his temporal lobes, particularly on the left. His semantic impairment predominantly involves object terms, with relative sparing of abstract nouns and most aspects of verb meaning. DM showed an advantage for abstract words on a wide range of tasks (e.g. producing definitions, synonymy judgments). These data challenge accounts that attribute the concreteness effect to a quantitative superiority at the level of the underlying conceptual representations. We suggest that there are qualitative differences between abstract and concrete concepts, and that, in particular, concrete concepts are more dependent on perceptual attributes that were disproportionately impaired in DM. We propose, further, that perceptual components of semantic representations are associated with structures in the inferior temporal lobe(s).