【摘要】 采用快速掩蔽启动范式、Go/No-go范式和事件相关脑电位(ERP)技术,探讨蒙语正字法邻居对目标词汇识别的影响及作用。实验要求被试执行一个额外的语义分类任务,对关键刺激不做明显的行为反应。结果发现,SOA为67 ms时,正字法邻居启动在头皮的额区和中央区引发了P150和N400的变化;SOA为167 ms时,正字法邻居启动在整个大脑皮层引发了N400的变化。结果表明,在蒙语词汇识别中,正字法对早期词汇水平的加工有一定影响,对词汇晚期的语义加工有促进作用。最后从词汇激活的竞争机制角度对结果进行了讨论。更多还原

【Abstract】 In the current study, we investigated the process and function of orthographic processing in Mongolian words recognition combining the rapid masked priming paradigm and Go/No go paradigm with the event-related potential(ERP) technology.Participants were introduced to perform a semantic categorization task but no response to the critical prime or target stimuli. The results showed that the P150 and N400 components were elicited a noticeable change under the orthographic neighbors priming in the frontal and central area of the brain cortex in the short SOA. There was a significant N400 component in the whole of the brain cortex in the long SOA. These findings suggest that orthography has a certain influence on the processing of early vocabulary level and promotes the semantic processing of late recognition. Finally, the results are discussed from the perspective of the competition mechanism of lexical activation.更多还原