语篇主题表征在大脑两半球的存贮

The Storing of Discourse Topic Presentation in the Two Hemispheres

使用半视野速示技术和启动—再认探测方法,采用包含两个句子的短语篇作为前行信息,通过主题启动、歧义词启动探测语段阅读时主题表征在大脑两半球的存贮情况。结果发现,无论是主题启动还是歧义词启动,左视野/右半脑和右视野/左半脑对语境相关的目标词反应时间都比不一致目标词更长,说明语段阅读后两半脑对主题表征都有存贮。

A priming paradigm in combination with a lateralized visual field （VF） procedure was used to explore how the representation of discourse topic was stored in the two hemispheres. The reading materials were paragraphs containing homographs.There were two independent variables, that is, the appropriate or inappropriate relationship between the target word and the context of the paragraph, and the left or right visual field of the target presentation （i. e. LVF/RH and RVF/LH）. The dependent variable is the response time （RT） of target recognition. It was found that the RT for the target of context appropriate was longer than that of context inappropriate in both LVF/RH and RVF/LH. Such result suggested that the information of the whole paragraph was activated in both hemispheres, and the discourse model would be stored in both hemispheres after it was constructed.