Use of semantic context by patients with Alzheimer's disease.
Use of semantic context by patients with Alzheimer's disease.
复制标题
阿尔茨海默病患者对语义上下文的使用。
DOI：
10.1037//0882-7974.1.3.261
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发表时间：
1986
影响因子：
3.7
通讯作者：
Holland,A
中科院分区：
文献类型：
--
作者：
Nebes,RD;Boller,F;Holland,A
在这项研究中，我们使用语义启动程序来检查阿尔茨海默病患者使用语义上下文的限制。我们还试图确定任何这样的语境效应是否仅通过自动过程介导，或者是否也涉及注意过程。采用三种任务考察语义语境对18名正常老年人和18名正常青年人以及18名阿尔茨海默病患者的操作的影响。当正常和痴呆的受试者被要求决定一个给定的项目是否是某个类别的成员时，结果表明，他们的反应时间同样受到项目在类别中的主导地位的影响。痴呆症患者识别单词的时间实际上比正常受试者更受启动句子提供的语义背景的影响。当被要求生成一个不完整句子的最后一个词时，痴呆症受试者的表现非常差，除非潜在的反应受到句子上下文的高度限制。
In this study we used semantic-priming procedures to examine limitations in the use of semantic context by patients with Alzheimer's disease. We also tried to determine whether any such contextual effects were mediated solely through automatic processes or whether attentional processes were also involved. Three tasks were applied to examine the effect of semantic context on the performance of 18 normal elderly and 18 normal young subjects, and on 18 patients with Alzheimer's disease. When normal and demented subjects were asked to decide whether a given item was a member of a certain category, results showed that their response times were equally affected by the item's dominance in the category. The time that demented patients took to recognize a word was actually affected more by the semantic context provided by a priming sentence than was that of normal subjects. When asked to generate the final word of an incomplete sentence, demented subjects performed very poorly unless potential responses were highly constrained by sentence context.