Jell R M, Stockwell C W, Turnipseed G T, Guedry F E
Naval Aerospace Medical Research Laboratory, Naval Air Station, Pensacola, FL 32508-5700.
Aviat Space Environ Med. 1988 Nov;59(11 Pt 1):1061-5.
We compared passive (manual) whole body, and active head oscillation in normal human subjects attempting mentally to influence the vestibulo-ocular reflex (VOR). Our objective was to establish simple procedural guidelines for vestibular test procedures in clinical settings. Using a head-fixed target, both methods of oscillation yielded virtually zero gain. Using an Earth-fixed target, active oscillation gain was unity, while passive gain was slightly less than 1. Using an imagined Earth-fixed target in the dark, both active and passive gains were reduced considerably, but passive gain was reduced more. Using an imagined head-fixed target in the dark, VOR gain was near zero at low frequencies but increased as frequency increased. Again, passive gain was less than active gain. At frequencies above 1 Hz, VOR gain in all conditions approached a value between 0.7 and 0.9. We conclude that active and manual passive rotation are simple and effective methods to test the VOR, but emphasize that visual and mental influences must be carefully controlled.
我们比较了正常受试者在尝试通过心理作用影响前庭眼反射（VOR）时的被动（手动）全身摆动和主动头部摆动。我们的目的是为临床环境中的前庭测试程序建立简单的操作指南。使用头部固定目标时，两种摆动方法的增益几乎为零。使用地球固定目标时，主动摆动增益为1，而被动增益略小于1。在黑暗中使用想象中的地球固定目标时，主动和被动增益均大幅降低，但被动增益降低得更多。在黑暗中使用想象中的头部固定目标时，VOR增益在低频时接近零，但随频率增加而增加。同样，被动增益小于主动增益。在高于1Hz的频率下，所有条件下的VOR增益都接近0.7至0.9之间的值。我们得出结论，主动和手动被动旋转是测试VOR的简单有效方法，但强调必须仔细控制视觉和心理影响。
