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 .
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 .
