周周的感知错位强度取决于saccade目标的视觉外观
Matthias P Baumann1,2, Anna F Denninger1,2,3,4, Ziad M Hafed1,2
1Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany.
Journal of neurophysiology
|November 19, 2024
概括
眼睛运动期间的视觉错位,或探测器错误判断,对于低频目标更为强烈. 这表明随随性放电信号可能传达目标外观,而不仅仅是运动向量.
科学领域:
- 神经科学是一个神经科学.
- 视觉感知 视觉感知 视觉感知
- 眼神运动控制器的控制器
背景情况:
- 在眼睛运动期间稳定的视觉感知依赖于整合视觉信息跨萨卡德.
- 视觉探测器经常错误地定位,这种现象可能与来自saccade命令的后果放电有关.
- 之前的研究表明,从上方结体发出的尾随性放电信号与结体目标的外观有所不同.
研究的目的:
- 为了检查是否对视觉错位受影响的视觉外观的saccade目标.
- 为了确定随随性放电是否将萨卡德目标的视觉特征传递到视觉系统.
主要方法:
- 人类参与者对不同空间频率 (低频与高频) 的目标进行了冲刺.
- 一个简短的,高对比度的周周探测器被介绍,参与者表示其感知位置.
- 萨卡德度量,动力学和探测器可见性被控制或测量在各种条件下.
主要成果:
- 与高空间频率目标相比,在低空间频率的萨卡德目标中观察到更强的周周错位.
- 在视野上方的探测器位置也显示了错位的增加.
- 尽管在目标外观条件下匹配的萨卡德指标,动力学和探测器可见性,但这些效应发生了.
结论:
- 视觉错位取决于萨卡德目标的视觉特征.
- 附带放电信号可能不仅传递流向量信息,还传递目标的视觉特征.
- 这意味着从运动指令到视觉处理的信息传输比以前假设的更丰富.
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