失语症是由多种疾病引起的常见的临床症状,突出的原因是卒中,Davydova(1977)报告卒中患者25～30%产生失语,Benson(1980)报告大约有40%的半球卒中患者产生失语症.由于语言与思维密切相关,使失语症成为神经病学领域中一个复杂而困难的课题.长久以来,各家对失语症的观点与解释不一,创用了各种不同的名称和分类, Aphasia is a common clinical symptom caused by a variety of diseases, notably due to stroke, Davydova (1977) reports aphasia in 25-30% of stroke patients and Benson (1980) in about 40% of patients with hemispheric stroke who develop aphasia Due to the close relationship between language and thinking, aphasia has become a complex and difficult subject in the field of neurology.According to different viewpoints and explanations of aphasics, various names and classifications have been used for a long time,