传统观念认为 ,失语症是由优势半球皮层语言中枢受损所致 ,不同语言区损伤可引起不同类型失语症。自 CT、MRI等新技术应用以来 ,业已证明引起皮层下结构受损的脑血管病亦可出现言语障碍即所谓“皮层下失语 ( subcortical aphasia,SA)”,且日益受到重视。现就本科近几年来发现的 The traditional view that aphasia is caused by the dominance of the central hemisphere cortical language damage caused by different language area can cause different types of aphasia. Since the application of new technologies such as CT and MRI, it has been shown that speech disorder, so-called “subcortical aphasia” (SA), has also been shown to be increasingly valued in cerebrovascular diseases that cause impaired subcortical structures. Now found in recent years undergraduate