Liu Ying, Perfetti Charles A, Hart Lesley
Learning, Research, and Development Center, University of Pittsburgh, Pittsburgh, PA 15260, USA.
J Exp Psychol Learn Mem Cogn. 2003 Nov;29(6):1231-47. doi: 10.1037/0278-7393.29.6.1231.
Two words that varied in their relationship were presented sequentially to Chinese readers who made meaning and pronunciation decisions. In the meaning task, they decided whether the words had the same meaning. In the pronunciation task, they decided whether the words had the same pronunciation. In both tasks, the word pairs represented 1 of 4 relationships: graphically similar, homophonic, semantically related, or unrelated. Event related potentials (ERP) recordings made from the onset of the 2nd word suggested a temporal unfolding of graphic, phonological, and semantic effects. Specifically, graphically-related pairs produced a smaller P200 in the pronunciation task and a smaller N400 in the meaning task. Homophones produced reduced N400 component with bilateral sources in the meaning task.
向做出语义和发音判断的中国读者依次呈现两个关系不同的词。在语义任务中,他们判断这两个词是否具有相同的含义。在发音任务中,他们判断这两个词是否具有相同的发音。在这两个任务中,词对代表四种关系中的一种:图形相似、同音、语义相关或不相关。从第二个词出现开始记录的事件相关电位(ERP)表明,图形、语音和语义效应在时间上逐步展开。具体而言,在发音任务中,图形相关的词对产生较小的P200,在语义任务中产生较小的N400。同音词在语义任务中产生双侧源的N400成分减少。