Circum-axis tilt controls the migration of the depositional center .

2轴向 倾斜运动 控制沉积中心的迁移；

Head-up tilt test ( HUT ) were performed in 55 patients with syncope of unknown origin ( SUO ) and 20 healthy people without syncope as controls The HUT with a tilt angle of 70 lasted 45 minutes .

55例不明原因晕厥病人进行倾斜70℃持续45分钟的直立 倾斜试验检查（HUT），20例无晕厥史健康人为 对照。