Abstract: The achievement of human language function is not only based on the brain regions in frontal and temporal cortex which are activated by language tasks, but also based on the anatomical connectivity of white matter fibers between these regions. With the development of technique of neural image, the diffusion tensor magnetic resonance image has been playing more and more important role in the research of the neural mechanism of language. We can apply diffusion tensor image to study the neural mechanism of language via combining diffusion tensor image with other approaches such as behavioral method, functional localization, functional connectivity and whole brain network analysis. Moreover the valid anatomical evidences for the neural substrate of language provided by diffusion tensor image will increase our understanding the relationship of brain and language.

Key words: diffusion tensor image, white matter, fibers, language, cognition