Dissociated identity and semantic priming in Broca's aphasia: How controlled processing produces inhibitory semantic priming
Dissociated identity and semantic priming in Broca's aphasia: How controlled processing produces inhibitory semantic priming
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DOI：
10.1006/brln.1996.0104
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发表时间：
1996-11-01
影响因子：
2.5
通讯作者：
Bushell, CM
中科院分区：
文献类型：
--
作者：
Bushell, CM
在语义启动实验中，布洛卡失语症患者完成了一项词汇决策任务，在语义启动实验中，相关单词的比例被操纵以足够长的刺激开始异步来进行基于期望的策略加工。对照被试的语义易化程度随关联比例的增加而明显增加。然而，失语症受试者表现出相反的效果，即随着亲属比例的增加而出现抑动性语义启动，尽管在第二次实验中，这些失语症患者随着亲属比例的增加而出现促进性身份启动。失语症患者身份和语义启动的这种显著分离被解释为支持“中心-环绕”理论（Carr & Dagenbach, 1990），该理论解释了在具有挑战性的单词识别条件下正常人群中发现的相同分离。(C) 1996学术出版社，Inc.
Broca's aphasics performed a lexical decision task in a semantic priming experiment in which the proportion of related words was manipulated with a sufficiently long stimulus onset asynchrony for expectancy-based, strategic processing to operate. The control subjects showed the typical increase in semantic facilitation as relatedness proportion increased. However, the aphasic subjects demonstrated the opposite effect such that inhibitory semantic priming occurred as relatedness proportion increased even though, in a second experiment, these same aphasics showed an increase in facilitatory identity priming as relatedness proportion increased. This striking dissociation of identity and semantic priming for the aphasics was interpreted as supporting the ''center-surround'' theory (Carr & Dagenbach, 1990), which accounts for the same dissociation found in the normal population under challenging word-recognition conditions. (C) 1996 Academic Press, Inc.