Objective: To evaluate the data of unilateral centrifugation subjective visual vertical (UC-SVV) in healthy young people.To study the function of utricle. Methods: Between Decem ber 2017 and May 2018, thirty-two healthy young volunteers were tested by static subjective visual vertical(SVV) and low velocity UC-SVV with Neuro Kinetics Inc I-portal 6.0 Video nystagmus recording system and NOTC rotating chair system.The static SVV preset angle were -15.00°, 15.00°, -20.00°, 20.00°, -12.00° and 12.00° respectively.UC-SVV test parameters: rotating chair's peak speed was 60°/s.The shift time from the middle to the lateral position was 30 s and the displacement was 3.85 cm.The chair rotated at 60 s at left, right and middle positions.Subjects underwent SVV during this period.SPSS 17.0 software was used to analyze the data. Results: The mean and standard deviation of static SVV deviation in 32 volunteers was 0.21°±0.17°, 95%CI (-0.14°, 0.55°). The mean and standard deviation of UC-SVV in the left, middle and right positions of the clockwise was 0.24°±0.25°, -0.10°±0.27°, -0.63°±0.26°, 95%CI(-0.26°, 0.74°), (-0.65°, 0.44°), (-1.16°, -0.10°). The mean and standard deviation of UC-SVV in the left, middle and right positions of the counter clockwise was 0.03°±0.27°, -0.11°±0.26°, -0.23°±0.26°, 95%CI(-0.52°, 0.59°), (-0.65°, 0.42°), (-0.76°, 0.30°). There was significant difference in the deviation between the left and the right side of counter clockwise rotation of UC-SVV(t=2.432, P<0.05), however, there was no significant difference in the angle of deviation between the left and right sides and the median position(t value was 0.951, -1.400, both P>0.05). There was no significant difference among each position in clockwise rotation of UC-SVV(F=0.253, P>0.05). Conclusion: UC-SVV test with peak speed of 60°/s can cause vertical line deviation in the left and right lateral position, but the angle is small and the value of clinical application is limited.
目的： 探讨健康青年人单边离心主观视觉垂直线相关参数(unilateral centrifugation subjective visual vertical，UC－SVV)，以期对椭圆囊功能进行更深入的探究。 方法： 2017年12月至2018年5月，采用美国Neuro Kinetics Inc I－Portal 6.0视频眼震记录系统、NOTC转移系统对天津市第一中心医院32名健康青年志愿者进行静态主观视觉垂直线及低速UC－SVV测试。志愿者中男性13名，女性19名；年龄20～32岁，中位年龄23岁。静态主观视觉垂直线预设角度为：－15.00°、15.00°、－20.00°、20.00°、－12.00°、12.00°。UC－SVV测试参数：转椅经10 s匀加速旋转达峰速60°/s后开始向侧位平移，平移时间30 s，位移3.85 cm，在左右侧位及中间位匀速旋转60 s。受试者在两侧位及中间位分别行UC－SVV测试，记录偏斜角度。以SPSS 17.0软件进行统计学分析。 结果： 32名志愿者静态主观视觉垂直线偏斜角度为0.21°±0.17°(x±s，下同)，95%CI为－0.14°～0.55°。逆时针及顺时针UC－SVV左、中、右三个位置的偏斜角度为0.24°±0.25°、－0.10°±0.27°、－0.63°±0.26°，0.03°±0.27°、－0.11°±0.26°、－0.23°±0.26°；95%CI为－0.26°～0.74°、－0.65°～0.44°、－1.16°～－0.10°，－0.52°～0.59°、－0.65°～0.42°、－0.76°～0.30°。逆时针旋转UC－SVV左侧位与右侧位偏斜角度差异有统计学意义(t＝2.432，P<0.05)，左右侧位与中间位偏斜角度差异无统计学意义(t值分别为0.951、－1.400，P值均>0.05)。顺时针旋转UC－SVV各位置间偏斜角度差异均无统计学意义(F＝0.253，P>0.05)。 结论： 峰速为60°/s的UC－SVV测试在侧位可引起垂直线角度偏斜，但倾斜角度较小，临床实用价值有限。.
Keywords: Unilateral centrifugation subjective visual vertical; Utricle; Vestibular function tests.