Autokinesis Reveals a Threshold for Perception of Visual Motion.
Autokinesis Reveals a Threshold for Perception of Visual Motion.
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自动运动揭示了视觉运动感知的阈值。
DOI：
10.1016/j.neuroscience.2024.02.001
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发表时间：
2024
期刊：
影响因子：
3.3
通讯作者：
Kheradmand,Amir
中科院分区：
文献类型：
--
作者：
Liu,Yihao;Tian,Jing;Martin-Gomez,Alejandro;Arshad,Qadeer;Armand,Mehran;Kheradmand,Amir
在自然的观看条件下，大脑可以最佳地整合视网膜和视网膜外信号，以保持稳定的视觉感知。然而，这些机制在提取运动信号不太可行的情况下可能会失败，比如视觉效果差的场景。这可能导致一种被称为自动现象的现象，在这种现象中，一个人可能会在一个完全黑暗的环境中经历一个小的视觉刺激的明显运动。在这项研究中，我们研究了自动对人类观察者运动视觉感知的影响。我们使用了一种新颖的光学跟踪方法，其中视觉运动由观察者手动报告。实验结果表明，在较低的运动速度下，感知到的运动方向更符合自动效应，而在光线下或在较高的速度下，在黑暗中，感知到的运动方向更符合实际运动方向。这些发现对于理解大脑中视觉表征的稳定性如何影响运动信号的准确感知具有重要意义。
In natural viewing conditions, the brain can optimally integrate retinal and extraretinal signals to maintain a stable visual perception. These mechanisms, however, may fail in circumstances where extraction of a motion signal is less viable such as impoverished visual scenes. This can result in a phenomenon known as autokinesis in which one may experience apparent motion of a small visual stimulus in an otherwise completely dark environment. In this study, we examined the effect of autokinesis on visual perception of motion in human observers. We used a novel method with optical tracking in which the visual motion was reported manually by the observer. Experiment results show at lower speeds of motion, the perceived direction of motion was more aligned with the effect of autokinesis, whereas in the light or at higher speeds in the dark, it was more aligned with the actual direction of motion. These findings have important implications for understanding how the stability of visual representation in the brain can affect accurate perception of motion signals.