He has found that parts of the brain linked to the production of speech are more active in stutterers than non-stutterers, while those involved in perceiving sounds are less so.

他发现大脑的一部分与生成话语的区域相连，口吃者的这个区域要比非口吃者活跃，而感知声音的那些区域则是非口吃者更活跃。