Clément G, Lathan C E
Laboratoire de Physiologie Neurosensorielle du CNRS, Paris, France.
Exp Brain Res. 1991;84(2):335-41. doi: 10.1007/BF00231454.
Horizontal and vertical OKN and OKAN were recorded in four conditions using the EOG technique. Instructions to subjects were aimed at obtaining a "look" type OKN. Two optokinetic stimulators, a stationary sphere and a binocular portable model, were compared with the subject in the upright condition. Three posture orientations, upright, 90 degree roll (horizontal), and upside-down, were then compared using the portable stimulator to determine the effect of roll-axis tilt on OKN at three velocities and on OKAN. Vertical OKN asymmetry was found to increase in the 90 degree roll position and to tend toward a reversal in the upside-down position. The time constant of vertical OKAN with slow phase up increased in both the 90 degree roll and upside-down positions. And finally, cross-coupled vertical eye movements during and after horizontal OKN were clearly observed. These results confirm the data obtained in monkeys, and are in accordance with the hypothesis of a three-dimensional organization of the velocity storage mechanism.
使用眼电图（EOG）技术在四种条件下记录水平和垂直视动性眼震（OKN）以及视动性眼偏斜（OKAN）。对受试者的指导旨在获得“注视”型OKN。将两个视动刺激器，一个固定球体和一个双目便携式模型，与处于直立状态的受试者进行比较。然后使用便携式刺激器比较三种姿势方向，即直立、90度翻滚（水平）和倒置，以确定翻滚轴倾斜对三种速度下的OKN和OKAN的影响。发现垂直OKN不对称性在90度翻滚位置增加，并在倒置位置趋于反转。在90度翻滚和倒置位置，慢相向上的垂直OKAN的时间常数均增加。最后，清楚地观察到水平OKN期间及之后的交叉耦合垂直眼动。这些结果证实了在猴子身上获得的数据，并与速度存储机制的三维组织假说一致。
