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心理学报
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冲突适应独立于意识:来自行为和ERP的证据
蒋军;向玲;张庆林;陈安涛
(1 认知与人格教育部重点实验室(西南大学); 西南大学心理学部, 重庆 400715) (2 University of Amsterdam, Department of Psychology, Amsterdam, The Netherlands) (3江西师范大学心理学院, 南昌 330022)
Conflict Adaptation Is Independent of Consciousness: Behavioral and ERP Evidence
JIANG Jun;XIANG Ling;ZHANG Qinglin;CHEN Antao
(1 Key Laboratory of Cognition and Personality, Ministry of Education, and Faculty of Psychology, Southwest University, Chongqing 400715, China) (2 University of Amsterdam, Department of Psychology, Amsterdam, The Netherlands) (3 School of Psychology, Jiangxi Normal University, Nanchang 330022, China)
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摘要 

尽管已有研究发现诸如抑制控制和任务转换等认知控制功能独立于意识, 但是对冲突适应是否需要意识的参与目前还存在激烈的争论。为了进一步探讨此问题, 本研究记录了18名被试在完成箭头偏对比掩蔽任务(meta-contrast masking task)时的行为和脑电数据。结果显示, 在有意识和无意识条件下在反应时和额中N2和中顶P3波幅上均表现出了显著的冲突适应效应。这不仅表明冲突控制独立于意识, 而且也表明先前无意识经验对人类信息加工系统的适应性调节作用。本研究对认识认知控制和意识的本质具有重要意义, 也为建构认知控制与意识关系的理论提供了启示。

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蒋军
向玲
张庆林
陈安涛
关键词 冲突适应无意识有意识冲突控制ERP    
Abstract

Previous studies have suggested that some cognitive control functions such as inhibition control and task switching were independent of consciousness, but it is unclear whether consciousness is necessary for conflict adaptation. Prior studies in consciousness domain showed that conflict adaptation reflected on behavioral measures and ERP components (N2 and P3). The purpose of current study is to test whether consciousness is necessary for conflict control. If conflict control was independent of consciousness, we would observe that the conflict effect indexed on reaction times and N2 and P3 amplitude modulated by previous trial congruency regardless of consciousness. If these hypotheses were verified, it could deepen our understanding of unconscious information processing and give us insight into the function of consciousness. To test our hypotheses, we obtained the behavioral and electroencephalogram (EEG) data from 18 subjects using an arrow version meta-contrast masking task, in which the primes fitted exactly within the inner contour of the target. By manipulating the time interval of prime and target and the presentation time of primes, the prime can be weakly or strongly masked. One subject was excluded from further analysis due to too many artifacts. To exclude the alternative interpretation of conflict adaptation by stimulus/response repetitions, stimulus or (and) response repetitions trials were removed before further analysis. After removing the artifacts included in the EEG segments, the ERPs were obtained according to each condition. The negative peak of N2 was averaged during 240-320 ms across fronto-central ROI electrode sites, while the P3 was averaged during the time 350-500 ms across centro-parietal ROI electrode sites. All analyses were performed separately based on the conditions of consciousness. The results showed that there was reliable conflict effect on reaction times and N2 and P3 amplitudes under conscious and unconscious conditions, and these effects were modulated by the congruency of previous trial type. Specifically, the conflict effect is smaller when the previous trials were incongruent than when they were congruent. Nevertheless, the size of conflict adaptation effect indexed on reaction times and N2 amplitude were larger under conscious condition than under unconscious condition, while the size of conflict adaptation between conscious and unconscious conditions were not significant. To our knowledge, we are the first to use ERP methods to study whether consciousness is necessary for conflict adaptation. These results not only suggest that the unconscious experience has great impact on human information processing system, but also suggest that conflict control is independent of consciousness. The difference in magnitude of conflict adaptation effect may come from the magnitude difference of conflict effect, and conscious conflict is far larger than unconscious conflict. Thus, in further studies we should pay attention to the difference and common aspects on unconscious and conscious conflict control. Moreover, the conflict monitoring theory can be perfectly interpreted the conflict control, but it do not elucidate the function of consciousness in the loop of conflict control. In conclusion, the current findings indicate that conflict adaptation is independent of consciousness. The current study could give some insights to understand and reveal the function of consciousness as well as its effect on conflict control.

Key wordsconflict adaptation    unconscious    conscious    conflict control    event-related potentials (ERPs)
收稿日期: 2013-05-16      出版日期: 2014-05-24
基金资助:

国家自然科学基金项目(31170983, 31100743, 31170980); 国家留学基金委(201306990046)。

通讯作者: 张庆林   
引用本文:   
蒋军;向玲;张庆林;陈安涛. 冲突适应独立于意识:来自行为和ERP的证据[J]. 心理学报, 10.3724/SP.J.1041.2014.00581.
JIANG Jun;XIANG Ling;ZHANG Qinglin;CHEN Antao. Conflict Adaptation Is Independent of Consciousness: Behavioral and ERP Evidence. Acta Psychologica Sinica, 2014, 46(5): 581-592.
链接本文:  
http://journal.psych.ac.cn/xlxb/CN/10.3724/SP.J.1041.2014.00581      或      http://journal.psych.ac.cn/xlxb/CN/Y2014/V46/I5/581
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