Tanaka M, Fukushima K
Department of Physiology, Hokkaido University School of Medicine, Sapporo, Japan.
Neurosci Res. 1997 Sep;29(1):93-8. doi: 10.1016/s0168-0102(97)00076-x.
We examined the influence of a peripheral visual stimulus on eye movement while monkeys performed a horizontal step-ramp pursuit task. When an irrelevant visual stimulus was presented before the onset of the target motion, slow eye movement away from the stimulus was observed. When the stimulus appeared during a temporal gap between the offset of the fixation point and the onset of target motion the velocity of the slow eye movement increased. The onset of the movement was time-locked to the onset of the extraneous visual stimulus and its latency was comparable to the latency of smooth pursuit in trials without a peripheral stimulus. The results demonstrate a new form of smooth eye movement, suggesting that the eye movement may be contained in the initial stages of smooth pursuit observed in step-ramp paradigms.
我们研究了在猴子执行水平阶梯斜坡追踪任务时，外周视觉刺激对眼球运动的影响。当在目标运动开始前呈现一个无关视觉刺激时，观察到眼球缓慢地远离该刺激运动。当刺激出现在注视点消失与目标运动开始之间的时间间隙时，缓慢眼球运动的速度增加。该运动的起始与外部视觉刺激的起始在时间上锁定，并且其潜伏期与没有外周刺激的试验中平滑追踪的潜伏期相当。结果表明了一种新的平滑眼球运动形式，这表明在阶梯斜坡范式中观察到的平滑追踪的初始阶段可能包含这种眼球运动。
