Tomassini Alessandro, Morgan Michael J, Solomon Joshua A
Optometry Department, City University, London, UK.
Vision Res. 2010 Mar 5;50(5):541-7. doi: 10.1016/j.visres.2009.12.005. Epub 2009 Dec 21.
The influence of prejudice on perception should be greatest when certainty about stimulus identity is least. We exploited this relationship to reveal visual biases for the cardinal orientations: vertical and horizontal. Specifically, when we increased the variance of orientations in an array of grating patches, estimates of the mean became less oblique. This result is consistent with a stable prior, or prejudice, for those orientations most prevalent in natural scenes.
当对刺激物身份的确定性最低时，偏见对感知的影响应该最大。我们利用这种关系揭示了对主要方向（垂直和水平）的视觉偏差。具体来说，当我们增加一组光栅斑块中方向的方差时，平均值的估计变得不那么倾斜。这一结果与自然场景中最普遍的那些方向的稳定先验或偏见是一致的。
