Psychological Science ›› 2012, Vol. 35 ›› Issue (1): 30-37.

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Task-set Effect on Automatic Semantic Activation: An ERPs Study

Song Juan,   

  • Received:2010-09-06 Revised:2011-05-13 Online:2012-01-20 Published:2012-01-20

任务定势对自动语义激活过程调节作用的ERP研究

宋娟1,吕勇2   

  1. 1. 天津师范大学
    2. 天津师范大学心理与行为研究院
  • 通讯作者: 吕勇
  • 基金资助:

    教育部人文社会科学重点研究基地重大项目《流动儿童社会处境、心理发展状况及需求的研究》;国家自然科学基金“十一五”规划(教育科学)2006年重点课题;教育部百篇优秀博士论文作者专项资金项目

Abstract:

Abstract: The study mainly concerned whether the top-down task factors could modulate automatic semantic activation using masked priming paradigm, Chinese two –character words stimuli and ERPs technique. The top-down task factors was task-set. The idexes were RT and N400. There were three kinds of tasks: subjects were asked to perform categorization task or structure decision task of the prime which separately had a “?” or a circle on it and to perform lexical decision task with the words that had a star symbol on it, which is the targets. The results showed that top-down task-set could modulate automatic semantic activation: After semantic categorization task the priming effect of masked primes on targets took place; After structure decision task the priming effect of masked primes on targets did not happen.

Key words: task-set, top-down modulation, automatic processing, automatic semantic activation, event-related potentials (ERPs)

摘要:

摘要:本研究致力于探讨自上而下的因素对自动加工的影响。选取的自上而下因素为任务定势,自动加工过程为自动语义激活过程。研究采用ERPs技术,中文词汇为刺激,利用掩蔽启动范式,采用反应时和N400为指标。实验任务有三个:对问号后出现的词进行生物/非生物的词汇分类判断;对圆圈后出现的词进行是否含上下结构的字的词汇结构判断;对带“*”的词进行真词/假词判断。研究发现先前完成的任务形成的任务定势会对随后的自动语义激活过程产生调节作用:在词汇分类判断任务后,掩蔽启动刺激对靶刺激产生启动效应。在词汇结构判断任务后,掩蔽启动刺激对靶刺激没产生显著的启动效应。

关键词: 任务定势, 自上而下的调节, 自动加工, 自动语义激活, 事件相关电位