言语产生的认知神经机制

从认知神经科学的角度阐述了言语产生中时间进程及其激活脑区的研究进展。首先简单介绍了言语产生中词汇通达的2种理论观点。在此基础上介绍了运用电生理技术指标LRP和N200，采用双重判断任务范式对言语产生的时间进程的研究。最后论述了有关语言产生的神经心理学研究和脑成像研究，重点阐述了言语产生中时间进程相对应的激活脑区，言语产生的脑区表现出左侧化趋势。

COGNITIVE NEUROSCIENCE RESEARCH OF SPEECH PRODUCTION

The study of speech production is a challenging question in language research. The topic of this paper is to review the development of speech production research from the point of view of cognitive neuroscience. There are two major theories about the lexical access in speech production two - step interactive activation theory and discrete stage theory. Their important differences are the time course of the lexical access and the interactive between two stages. Using the dual GO/NO-GO tasks, the ERP researches provided much more detailed evidences about the time course of speech production by LRP and N200 indices. Summarizes the core findings of the neuropsychology and the brain imaging of speech production. Based on the meta - analysis of a number of the studies of brain imaging, concludes every stages corresponding dynamic brain areas in the time course of speech production. The network of producing words is almost completely left - lateralized.