Institute for Psychology and Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster 48149, Germany.
School of Social Sciences and MARCS Institute for Brain, Behaviour and Development, Western Sydney University, Sydney, NSW 2751, Australia.
Sci Adv. 2024 Nov 8;10(45):eadp6204. doi: 10.1126/sciadv.adp6204. Epub 2024 Nov 6.
Vision generates a stable representation of space by combining retinal input with internal predictions about the visual consequences of eye movements. We report a type of nonrigid motion that disrupts the connection between eye movements and perception, causing visual instability. This motion is accurately perceived during fixation, but it cannot be pursued. Catch-up saccades are accurately directed to the moving target but the motion stimulus appears to jump in space with each saccade. Our results reveal four major findings about perception and the visuomotor system: (i) Pursuit fails for certain types of motion; (ii) pursuit and catch-up saccades are independently controlled; (iii) prediction of saccade consequences is independent from saccade control; and (iv) the visual stability of moving objects relies on similar motion mechanisms as pursuit.
视觉通过将视网膜输入与关于眼球运动视觉后果的内部预测相结合，生成空间的稳定表示。我们报告了一种非刚性运动，它破坏了眼球运动和感知之间的联系，导致视觉不稳定。这种运动在注视时能被准确地感知，但不能被追随。追踪性眼球跳动能准确地指向移动的目标，但运动刺激在每一次眼球跳动时都会在空间中跳跃。我们的结果揭示了关于感知和视觉运动系统的四个主要发现：（i）某些类型的运动无法进行追踪；（ii）追踪和追踪性眼球跳动是独立控制的；（iii）眼球跳动后果的预测与眼球跳动控制是独立的；以及（iv）移动物体的视觉稳定性依赖于与追踪相似的运动机制。
