ADJUSTMENT OF SACCADE CHARACTERISTICS DURING HEAD MOVEMENTS
ADJUSTMENT OF SACCADE CHARACTERISTICS DURING HEAD MOVEMENTS
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DOI：
10.1007/bf00234475
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发表时间：
1973-01-01
影响因子：
2
通讯作者：
DICHGANS, J
中科院分区：
文献类型：
--
作者：
MORASSO, P;BIZZI, E;DICHGANS, J
在猴子的协调性眼球运动过程中研究了眼跳特征。将头部转动时的眼跳幅度、持续时间和峰值速度与头部被人为限制时的眼跳进行比较。结果表明，眼跳特征调制作为头部运动的函数，因此，凝视运动（眼睛+头部）完全匹配眼跳与头部固定。扫视调节是通过负前庭眼反馈来实现的。颈部的本体感受器，因为它们的潜伏期较长，只有当头部在扫视开始之前开始移动时才有效。它的结论是，扫视与头部转动是不是“弹道”的运动，因为他们的轨迹是不完全由中央命令预定。
Saccade characteristics have been studied during coordinated eyehead movements in monkeys. Amplitude, duration, and peak velocity of saccades with head turning were compared with saccades executed while the head was artificially restrained. The results indicate that the saccade characteristics are modulated as a function of head movement, hence the gaze movement (eye+head) exactly matches saccades with head fixed. Saccade modulation is achieved by way of negative vestibulo-ocular feedback. The neck proprioceptors, because of their longer latency, are effective only if the head starts moving prior to the onset of saccade. It is concluded that saccades made with head turning are not “ballistic” movements because their trajectory is not entirely predetermined by a central command.