Department of Surgical Medical Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy.
Fondazione Stella Maris Mediterraneo, Chiaromonte, Italy.
Elife. 2021 Mar 22;10:e67185. doi: 10.7554/eLife.67185.
We measured the modulation of pupil size (in constant lighting) elicited by observing transparent surfaces of black and white moving dots, perceived as a cylinder rotating about its vertical axis. The direction of rotation was swapped periodically by flipping stereo-depth of the two surfaces. Pupil size modulated in synchrony with the changes in front-surface color (dilating when black). The magnitude of pupillary modulation was larger for human participants with higher Autism-Spectrum Quotient (AQ), consistent with a local perceptual style, with attention focused on the front surface. The modulation with surface color, and its correlation with AQ, was equally strong when participants passively viewed the stimulus. No other indicator, including involuntary pursuit eye movements, covaried with AQ. These results reinforce our previous report with a similar bistable stimulus (Turi, Burr, & Binda, 2018), and go on to show that bistable illusory motion is not necessary for the effect, or its dependence on AQ.
我们测量了在恒定光照下观察到黑色和白色移动点的透明表面时瞳孔大小的调制，这些点被感知为一个绕其垂直轴旋转的圆柱体。通过翻转两个表面的立体深度周期性地切换旋转方向。当前表面颜色（黑色时放大）发生变化时，瞳孔大小会同步调制。具有较高自闭症谱系商数（AQ）的人类参与者的瞳孔调制幅度更大，这与一种局部感知风格一致，注意力集中在前表面。当参与者被动观察刺激时，表面颜色的调制及其与 AQ 的相关性同样强烈。没有其他指标，包括非自愿追踪眼球运动，与 AQ 相关。这些结果加强了我们之前使用类似双稳态刺激的报告（Turi、Burr 和 Binda，2018），并进一步表明双稳态幻觉运动对于该效应或其对 AQ 的依赖性并非必需。
