the temporal order of word presentation modulates the amplitudes of p2 and n400 during recognition of causal relations

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ID: 170465
2016
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摘要
The processing of causal relations has been constantly found to be asymmetrical once the roles of cause and effect are assigned to objects in interactions. We used a relationship recognition paradigm and recorded electroencephalographic (EEG) signals to explore the neural mechanism underlying the asymmetrical representations of causal relations in semantic memory. The results revealed that the verification of causal relations is faster if two words appear in cause–effect order (e.g., virus-epidemic) than if they appear in effect–cause order (e.g., epidemic-virus), whereas no such asymmetrical representation was found for the verification of hierarchical relations with reverse orders (e.g., bird-sparrow v. sparrow-bird) in Experiment 1. Furthermore, the P2 amplitude elicited by superordinate-subordinate order was larger than that when in reverse order, whereas the N400 effect elicited by cause-effect order was smaller (more positive) than when in reverse order. However, no such asymmetry, as well as P2 and N400 components, were observed when verifying the existence of a general associative relation in Experiment 2. We suggested that the smaller N400 in cause-effect order indicates their increased salience in semantic memory relative to the effect-cause order. These results provide evidence for dissociable neural processes, which are related to role binding, contributing to the generation of causal asymmetry.
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liang2016frontiersthe 使用此键在稿件中自动引用，同时使用 SciMatic 稿件管理器或论文管理器
作者 Xiuling Liang, Feng Xiao, Lijun Wu, Qingfei Chen, Yi Lei, Hong Li
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期刊 accounts of chemical research
年份 2016
DOI
10.3389/fpsyg.2016.01890
URL
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.01890/full
关键词
psychology self-esteem n400 unethical behavior materialism p2 causal relations corrupt intentionpsychology

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