Event-related potential and reaction time evidence for inhibition between alternative meanings of ambiguous words
Event-related potential and reaction time evidence for inhibition between alternative meanings of ambiguous words
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DOI：
10.1016/s0093-934x(02)00527-8
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发表时间：
2003-08-01
影响因子：
2.5
通讯作者：
Kolk, HHJ
中科院分区：
文献类型：
--
作者：
Chwilla, DJ;Kolk, HHJ
我们研究了收敛到相同语义目标表征的两个素数的影响（例如，LION-STRIPES-TIGER）或发散到不同的语义目标表示（例如，肾-钢琴-器官）。Balota和Paul（1996）的研究表明，两个相关启动子在命名和词汇判断中的反应时效应是相加的，无论是对不明确词还是对歧义词。只有在一个相关性判断任务歧义的话表现出欠加性，而明确的话再次表现出加性。这种加性不足被解释为反映了歧义词的替代意义的抑制。在这篇文章中，我们测试是否抑制N400发生，假设索引词汇后整合。在词汇判断中，我们发现添加剂N400和RT的影响，明确和歧义的话。在相关性判断任务中，我们观察到测量之间的差异：（1）对于不明确的词，N400的过度加和性与RT的加和性;（2）尽管对于不明确的词，N400和RT的加和性不足，但效果是不同的。对于RT，替代意义只是不太可用，而对于N400，替代意义似乎完全不可用。我们的研究结果对我们理解歧义词处理中的抑制过程和N400的功能意义具有一定的意义。(C)2003 Elsevier Science（美国）。All rights reserved.
We investigated the effects of two primes that converged onto the same semantic target representation (e.g., LION-STRIPES-TIGER) or diverged onto different semantic target representations (e.g., KIDNEY-PIANO-ORGAN). Balota and Paul (1996) showed that the RT effects of two related primes in naming and lexical decision are additive, both for unambiguous and ambiguous words. Only in a relatedness judgment task ambiguous words showed underadditivity, whereas unambiguous words again showed additivity. This underadditivity was interpreted to reflect inhibition of alternative meanings of ambiguous words. In this article we tested whether inhibition occurs for N400, assumed to index postlexical integration. In lexical decision, we found additive N400 and RT effects for unambiguous and for ambiguous words. In a relatedness judgment task we observed differences between measures: (1) for unambiguous words overadditivity for N400 vs. additivity for RT; (2) although, for ambiguous words underadditivity occurred for N400 and RT, the effects were different. For RT, the alternative meaning was only less available, whereas for N400 the alternative meaning appeared completely unavailable. Our results have implications for our understanding of inhibitory processes in the processing of ambiguous words and for the functional significance of N400. (C) 2003 Elsevier Science (USA). All rights reserved.