目的：研究脑损害患者的普通话或粤语声调表达特点，探讨汉语中这两种语言声调表达的大脑优势侧和声调的定位趋势。

• Objective: To study the characteristics of Pu Tong Hua and Cantonese tone expression and to explore the cerebral lateralization and localization of Chinese tone expression.