Koken P W, Erkelens C J
Utrechts Biofysica Instituut, Buys Ballot Laboratorium, Rijksuniversiteit Utrecht, The Netherlands.
Exp Brain Res. 1993;96(3):494-500. doi: 10.1007/BF00234117.
In order to find out whether human vergence eye movements are influenced by simultaneous hand tracking movements, vergence was studied when sinusoidal (expressed in vergence angles) target movements were tracked. The target motion was externally generated and the target actually moved in depth. Tracking was done by the eyes alone or by the eyes and hand together, in both light and dark viewing conditions. Our data show that the target motion was tracked by the eyes with a short delay (on average 48 ms), independent of the tracking condition. This suggests that vergence modeling should include some predictive mechanism similar to that proposed for the smooth pursuit subsystem. Furthermore, in contrast to effects on smooth pursuit, simultaneous hand tracking movements did not influence vergence eye movements. From this, we argue that the balance between smooth pursuit and saccadic eye movements is adjustable and can be adapted to the requirements of different tasks.
为了探究人类双眼的聚散运动是否会受到同时进行的手部跟踪运动的影响，我们研究了在跟踪正弦波（以聚散角度表示）目标运动时的聚散情况。目标运动由外部产生，且目标实际在深度方向上移动。在明亮和黑暗的观察条件下，分别通过仅用眼睛或眼睛与手同时进行跟踪。我们的数据表明，无论跟踪条件如何，眼睛都能以较短的延迟（平均48毫秒）跟踪目标运动。这表明聚散建模应包括一些类似于为平稳跟踪子系统所提出的预测机制。此外，与对平稳跟踪的影响不同，同时进行的手部跟踪运动并未影响双眼的聚散运动。由此，我们认为平稳跟踪和眼球跳动之间的平衡是可调节的，并且可以根据不同任务的要求进行调整。
