The neural basis of breaking mental set: an event-related potential study

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• 作者：Yufang Zhao (12)
  Shen Tu (12)
  Ming Lei (12)
  Jiang Qiu (12) qiuj318@swu.edu.cn
  Oscar Ybarra (3)
  Qinglin Zhang (12)
• 关键词：Mental set &#8211 ; Problem solving &#8211 ; ERPs (event ; related potentials)
• 刊名：Experimental Brain Research
• 出版时间：January 2011
• 出版年：2011
• 期刊代码：90_0014-4819
• 类别：bio
• 卷：208
• 期：2
• 页码：181-187
• 数据来源：sp

摘要

Event-related brain potentials (ERPs) were recorded to explore the electrophysiological correlates of breaking mental set when subjects performed the Chinese character-generation task. A new experimental paradigm (learning–testing model) was adopted in order to make subjects find a solution actively by using a fixed way (Rep: repetition) or a new method (BMS: breaking mental set). Results showed that BMS elicited a more positive ERP deflection (P500-700) than did Rep between 500 and 700 ms after onset of the test stimuli. The P500-700 was possibly involved in the successful breaking of mental set and the initial forming of new associations during problem solving. Furthermore, BMS also elicited a more positive ERP deflection (P900-1300) than did Rep between 900 and 1,300 ms. The P900-1300 might reflect searching and generating a new character after breaking mental set.