Smith S T, Curthoys I S, Moore S T
Department of Psychology, University of Sydney, NSW, Australia.
Vision Res. 1995 Jul;35(14):2045-55. doi: 10.1016/0042-6989(94)00290-3.
Recent results by Wearne [(1993) Ph.D. thesis] using the scleral search-coil method of measuring eye position indicate that changes in ocular torsion position (OTP) occur during yaw angular acceleration about an earth vertical axis. The present set of experiments, using an image processing method of eye movement measurement free from the possible confound of search coil slippage, demonstrates the generality and repeatability of this phenomenon and examines its possible causes. The change in torsion position is not a linear vestibulo-ocular reflex (LVOR) response to interaural linear acceleration stimulation of the otoliths, but rather the effect is dependent on the characteristics of the angular acceleration stimulus, commencing at the onset and decaying at the offset of the angular acceleration. In the experiments reported here, the magnitude of the angular acceleration stimulus was varied and the torsion position response showed corresponding variations. We consider that the change in torsion position observed during angular acceleration is most likely to be due to activity of the semicircular canals.
韦恩（1993年博士论文）近期使用巩膜搜索线圈法测量眼位的结果表明，在绕地球垂直轴的偏航角加速度过程中，眼扭转位置（OTP）会发生变化。本系列实验采用图像处理方法测量眼动，避免了搜索线圈滑动可能造成的混淆，证明了这一现象的普遍性和可重复性，并探究了其可能的原因。扭转位置的变化不是耳石对耳间线性加速度刺激的线性前庭眼反射（LVOR）反应，相反，这种效应取决于角加速度刺激的特性，在角加速度开始时出现，在角加速度结束时衰减。在此报道的实验中，改变了角加速度刺激的大小，扭转位置反应也呈现出相应变化。我们认为，在角加速度过程中观察到的扭转位置变化很可能是由于半规管的活动所致。
