The current study analyzed event-related potentials (ERPs) associated with visuo-spatial transformation in order to examine how “chunk tightness” affects the difficulty of chunk decomposition problems. Participants completed a Chinese character decomposition task in three conditions according to the tightness of the to-be-decomposed chunk (tight vs. medium vs. loose). Behavioral data showed that performance became worse (longer reaction time, lower accuracy) as chunk tightness increased. ERP data showed that, as chunk tightness increased, the LPC exhibited a significant decrease at posterior electrode sites. The results indicate that chunk tightness might exert its primary effect on chunk decomposition difficulty by increasing the difficulty of visuo-spatial transformation, a process linked to the parietal LPC.

中文翻译：

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晚期顶叶事件相关的潜在成分在块分解过程中对块紧密度在层次上敏感。

当前的研究分析了与视觉空间转换相关的事件相关电位 (ERP)，以检查“块紧密度”如何影响块分解问题的难度。参与者根据待分解块的松紧程度（紧 vs. 中 vs. 松）在三种情况下完成了汉字分解任务。行为数据显示，随着块紧密度的增加，性能变得更糟（反应时间更长，准确性更低）。ERP 数据显示，随着块紧密度的增加，LPC 表现出显着的在后电极部位减少。结果表明，块紧密度可能通过增加视觉空间转换的难度来对块分解难度产生主要影响，视觉空间转换是一个与顶叶 LPC 相关的过程。