Honaker Julie A, Converse Connie M, Shepard Neil T
University of Nebraska-Lincoln, Lincoln, NE 68583-0738, USA.
Am J Audiol. 2009 Dec;18(2):108-13. doi: 10.1044/1059-0889(2009/09-0012).
Recent research on head shake posturography has demonstrated a modest increase in sensitivity to identifying peripheral vestibular system asymmetry when horizontal head movements were added to portions of the standard Sensory Organization Test (SOT) battery. However, limitations with respect to the head shake protocol were outlined, and usable data for assessing performance could not be established. The purpose of this study was to test a change in protocol for use of head shake SOT to address the noted limitations.
Forty participants ranging in age from 20 to 79 years with no history of dizziness completed Conditions 2 and 5 of the SOT portion of computerized dynamic posturography on EquiTest equipment, while maintaining head still as well as 4 horizontal head movement velocity tasks.
Slope of a linear regression fit to 6 performance points was used to characterize each participant. Spearman's ranked correlation (r) indicated a significant relationship between the slope of the line representing a decline in performance with age (r = -.52, p = .0006).
The head shake modification showed a trend in increasing the separation of normal individuals across age and eliminated the limitations addressed in earlier research. Future research will investigate the head shake modification for identifying vestibular peripheral system asymmetries.
近期关于摇头姿势描记法的研究表明，在标准感觉组织测试（SOT）部分测试中加入水平头部运动后，识别外周前庭系统不对称性的敏感性略有提高。然而，研究概述了摇头测试方案存在的局限性，且无法建立用于评估性能的可用数据。本研究的目的是测试一种用于摇头SOT的测试方案变化，以解决上述局限性。
40名年龄在20至79岁之间、无头晕病史的参与者，在EquiTest设备上完成了计算机动态姿势描记法中SOT部分的条件2和条件5测试，同时保持头部静止以及进行4种水平头部运动速度任务。
用线性回归拟合6个性能点的斜率来表征每个参与者。斯皮尔曼等级相关系数（r）表明，代表性能随年龄下降的直线斜率之间存在显著关系（r = -0.52，p = 0.0006）。
摇头测试方案的改进显示出一种趋势，即增加了不同年龄段正常个体之间的区分度，并消除了早期研究中提到的局限性。未来的研究将探讨摇头测试方案在识别前庭外周系统不对称性方面的应用。
