错觉，是在特定条件下产生的对客观事物不正确的知觉。

Illusion is the wrong feeling to the matters in the special conditions.

youdao

此外还观察到，在单纯亮度对比条件下，只需1.8％和5.3％的低对比度即可分别产生轮廓和边缘错觉；

The minimum contrasts for inducing contour and border illusions were only1.8% and 5.3% under LC.

youdao

此外还观察到，在单纯亮度对比条件下，只需1.8％和5.3％的低对比度即可分别产生轮廓和边缘错觉；

The minimum contrasts for inducing contour and border illusions were only1.8% and 5.3% under LC.

youdao