Nilsson D E, Warrant E J
Department of Zoology, University of Lund, Helgonavägen 3, S-223 62, Lund, Sweden.
Curr Biol. 1999 Jul 15;9(14):R535-7. doi: 10.1016/s0960-9822(99)80330-3.
Objects can differ in brightness and colour. At least that is what our own visual system tells us. It now seems that stomatopod shrimps, and possibly also cephalopod molluscs, can see the direction of the electric vector of light, in much the same way we see colour.
物体在亮度和颜色上会有所不同。至少我们自己的视觉系统是这么告诉我们的。现在看来,口足类虾,可能还有头足类软体动物,能够像我们感知颜色一样感知光的电矢量方向。