双侧前额皮层的语言功能--用近红外技术研究语言功能的初步实验

本文报告一个用近红外技术进行的语言认知脑成像实验.实验通过脑f血流的变化情况考察了双侧前额皮层对由不同通道输入的,不同语言的各个层次的认知反应.实验结果表明,双侧前额皮层对高层语义加工,包括对篇章的归纳与抽象,具有特殊的功能,这种功能的神经学分布是对称的,这种功能及其对称性不随语言和输入通道的变化而变化.相比之下,前额皮层对读、听语言材料以及听音乐却显得不敏感.局部血流的变化只显示其对上述任务的一般性的注意力控制.

The Linguistic Functions of the Bilateral Prefrontal Cortex : An Experimental Approach to Neural Linguistic Functions with the Near-Infrared Spectroscopy Technique

This paper is to report a linguistic cognitive experiment with the near infrared spectroscopy technique. The experiment examined the cognitive response of the bilateral prefrontal cortex to different languages through different modalities by comparing the cerebral blood flow changes. The results suggested that the prefrontal cortex was sensitive to higher level linguistic processing including the generalization and abstraction of a context, and this sensitivity was symmetrical. In contrast, the prefrontal cortex was not sensitive to listening to music or reading (or listening to ) a text both in Chinese and English, but it had some control over these tasks with the distribution of general attention.