So they rounded up 15 med students and medical residents and had them perform chest compressions on a dummy while listening to the music.Their task: Time their compressions to the beat.

• 研究人员为此征集了15名医学院学生和驻院医生，让他们边听音乐边对一个假人实施胸部按压，他们的任务是跟着节奏进行按压。