加利福尼亚大学的神经学教授维拉雅诺·S ·拉马坎德兰说:“人们常常将眼睛的错觉看作是一种新奇的现象,这是一种误解。事实上,研究视错觉是很重要的,因为它会向人们揭示:视觉系统是如何工作的,它的基本原则又是什么。“
  生活在三维世界里的人们在一般情况下是体验不到错觉的,因为三维世界提供了许多暗示以帮助我们的大脑理解各种图像。然而如果这些暗示在二维世界里被有选择地削弱了的话,大脑就可能会被愚弄而产生错觉。
  

  闭上你的右眼,盯着图左侧的十字看。然后将图慢慢地移近你的眼睛。当左侧红点聚焦在左眼视网膜上的图像遮住了被称为盲点的光神经头时,这一红点就会消失。因为在盲点位置是没有光感受器的,但是红点消失的地方并不会出现空白,大脑会以邻近感受器得到的信息作出临时处理,该空白会被背景区域内的斜线条填补。

http://jifanghua.blogbus.com/logs/2004/02/84111.html



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