Materials and methods: With the use of a transcranial Doppler analyser the blood flow in the brain wasmeasured before and 10 minutes after mastication.

• 材料与方法:应用超声多谱勒探测仪探测咀嚼前和咀嚼10分钟后脑血流的改变,对所测大脑中动脉的收缩期峰流速、舒张期末峰流速、平均峰流速进行对比分析。