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采用事件相关电位(ERP)技术探讨了在数字stroop范式中中文数字的物理信息和数字信息的交互作用电生理基础.结果发现,在任务出现后的250ms左右,在数字大小判断任务和物理大小判断任务中,不一致条件(数字大小与物理大小不一致)比一致条件(数字大小与物理大小一致)诱发的ERP有一个更加负向的偏移(N250);随后,在300～450ms内,在数字大小判断任务和物理大小判断任务中,在大脑头皮顶部诱发明显的P300,且一致7条件比不一致条件诱发的P300更正.因此我们的研究表明中文数字的物理信息和数字信息的冲突主要发生在比较阶段.
Using the ERP technology, the electrophysiological basis of the interaction between Chinese digital physical information and digital information in digital stroop paradigm was discussed. It was found that after the task appeared about 250ms, In the task, inconsistent conditions (numerical size and physical size are inconsistent) have a more negative bias (N250) than ERP (consistent with numerical size and physical size); then, within 300 ~ 450ms, In the task of determining task and physical size, obvious P300 was induced on the top of the scalp, and consistent 7 conditions were more correct than the P300 induced by the inconsistent conditions.Therefore, our research shows that the conflict between the Chinese digital physical information and digital information occurs mainly in the comparative stage .