Methods : adopting the dog vomiting model induced levodopa and the pigeon vomiting model induced copper sulfate , observeing the vomiting times and delitescence , frequency and range of gastric motility and the gastric emptying rate .

方法：采用左旋多巴导致家犬呕吐和硫酸铜导致家鸽呕吐模型，观察动物呕吐次数和潜伏期、胃运动频率和幅度、胃排空率的变化。

We adopted the dog vomiting model by levodopa and the pigeon vomiting model by bluestone and so on , then observed the vomiting times and delitescence , the frequency and range of gastrointestinal motility and the stomach empty .

采用左旋多巴导致家犬呕吐和硫酸铜导致家鸽呕吐等模型，观察动物呕吐次数和潜伏期、胃肠运动频率和幅度、胃排空率的变化。