Haslwanter T, Curthoys I S, Halmagyi G M, Black R A, Topple A N, Todd M J
Department of Psychology, University of Sydney, NSW, Australia.
Acta Otolaryngol Suppl. 1995;520 Pt 1:62-4. doi: 10.3109/00016489509125191.
Using dual torsion scleral search coils we have recorded 3-dimensional eye position during yaw angular accelerations of 20 degrees/s2 about an earth vertical axis in healthy subjects and in patients with unilateral vestibular deafferentation (UVD). These experiments produced two interesting results: i) even in healthy subjects, the axis of eye velocity did not coincide with the (earth vertical) stimulus axis during centred rotation; ii) Patients with UVD had torsional eye velocity components that were systematically different from those in normal subjects. While in normals the direction of the torsional component of the eye velocity depended on the direction of rotation and was on average approximately symmetric for CW and CCW yaw rotation, there was a clear asymmetry in patients, which was distinctly different for left and right UVD.
我们使用双扭转巩膜搜索线圈，记录了健康受试者和单侧前庭传入神经切断术（UVD）患者在绕地球垂直轴进行20度/秒²的偏航角加速度过程中的三维眼位。这些实验产生了两个有趣的结果：i）即使在健康受试者中，在中心旋转期间，眼速度轴也与（地球垂直）刺激轴不一致；ii）UVD患者的扭转眼速度分量与正常受试者的系统地不同。在正常人中，眼速度扭转分量的方向取决于旋转方向，并且对于顺时针和逆时针偏航旋转平均大致对称，而患者中存在明显的不对称，这在左、右UVD患者中明显不同。
