J Opt Soc Am A Opt Image Sci Vis. 2021 Feb 1;38(2):149-156. doi: 10.1364/JOSAA.409940.
When two visual patterns moving in opposite directions are superimposed on the same depth plane, they appear to have two transparent surfaces moving independently (transparent motion). Additionally, the direction of the slow phase of optokinetic nystagmus (OKN) corresponds to the direction of motion that dominates the perceptual appearance. This study examines whether pupil changes correspond to the luminance of the dominated objects related to the transition of the slow-phase direction in OKN following objects. Stimuli consisted of two random dot patterns of different luminance that moved in opposite directions. The results showed that pupil size changed in accordance with the luminance of the pattern in the slow phase of OKN immediately after OKN transition. This suggests that pupil size is modulated with OKN in transparent motion.
当两个向相反方向移动的视觉模式叠加在同一深度平面上时，它们看起来像是两个透明表面在独立移动（透明运动）。此外，视动性眼球震颤（OKN）的慢相的方向与主导知觉外观的运动方向相对应。本研究检验了瞳孔变化是否与 OKN 中物体的慢相方向转换后与主导物体相关的亮度变化相对应。刺激物由两个以不同亮度向相反方向移动的随机点模式组成。结果表明，在 OKN 转换后，瞳孔大小会根据 OKN 慢相期间的模式亮度而变化。这表明瞳孔大小在透明运动中与 OKN 一起被调制。
