ACCURACY OF SACCADIC EYE-MOVEMENTS AND MAINTENANCE OF ECCENTRIC EYE POSITIONS IN DARK
ACCURACY OF SACCADIC EYE-MOVEMENTS AND MAINTENANCE OF ECCENTRIC EYE POSITIONS IN DARK
复制标题
DOI：
10.1016/0042-6989(73)90141-7
复制
发表时间：
1973-01-01
期刊：
影响因子：
1.8
通讯作者：
KLEIN, HM
中科院分区：
文献类型：
--
作者：
BECKER, W;KLEIN, HM
研究了黑暗中眼动系统的两个方面的行为：（1）在没有视觉输入的情况下，在试图保持一个给定的偏心注视方向时，眼睛向主方向漂移。向后漂移部分地由小的校正扫视补偿。虽然对于视觉控制的注视，眼睛也会漂移，但这要低5-10倍。这导致的结论是，眼睛的位置在固定的可见目标是稳定的漂移通过continuouscontrol循环。作为一个可能的漂移源的泄漏积分控制器进行了讨论。(2)练习给定目标之间的扫视（角位移5-70°）;在试图根据记忆和在黑暗中多次再现这些扫视时，第一次尝试偏离适当的角度约5°。连续重复的幅度越来越偏离所需的角度。如果要再现的角度小于50°，则它们增大，如果该角度超过60°，则它们减小。如果先前没有进行角位移练习，则在黑暗中的自主扫视以50°的角度开始，并且随着重复的继续而趋向于60°。
Two aspects of the behaviour of the oculomotor system in the dark were examined:(1) In attempting to hold a given eccentric gaze directionwithoutvisual input, the eye drifts back towards the primary direction. The backwards drift is partly compensated by small correction saccades. Although for fixationwithvisual control the eyes also drift, this is 5–10 times lower. This leads to the conclusion that the eye position during the fixation of visible targets is stabilized against drift by acontinuouscontrol loop. As a possible source of drift a leaky integrating controller is discussed.(2) Saccades between given targets (angular displacement 5–70°) were practised; in trying to reproduce these saccades a number of times from memory and in the dark, the first attempts deviate by about 5° from the appropriate angle. The amplitudes of successive repetitions deviate increasingly from the desired angle. They increase if the angle to be reproduced is below 50°, and they decrease if this angle exceeds 60°. If no angular displacement had previously been practised, voluntary saccades in the dark start with an angle of 50° and tend to 60° as the repetitions continue.