The words working memory had advantage in the left hemisphere ( LH) for the controls. But the patients had the same mode in processing negative and neutral words. The positive words were advantage in the right hemisphere ( RH). 正常组三种词性词语工作记忆加工具有左半球优势;患者只有中性词和负性词具有左半球优势,但正性词加工为右半球优势,可能存在一侧化异常。