What did Dr. Sasaki find about the participants in her experiment?

What did Dr. Sasaki do when re-running her experiment?

Dr. Sasaki analyzed the negative effect of irregular tones on brains when re-running her experiment. 未知类型：{'label': 'questionDesc', 'content': '请根据所给材料判断题干是否正确', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2017年12月 四级 卷一 仔细阅读1', 'isMemberControl': 0, 'type': 181}