Visual discrimination: Seeing the third quality of light.
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.
Department of Zoology, University of Lund, Helgonavägen 3, S-223 62, Lund, Sweden.
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Nilsson
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EJ
Warrant
D000818:Animals; D001522:Behavior, Animal / Q000502:physiology; D003118:Color Perception / Q000502:physiology; D015350:Contrast Sensitivity / Q000502:physiology*; D033364:Decapoda / Q000502:physiology; D004560:Electricity; D008027:Light; D017956:Photoreceptor Cells, Invertebrate / Q000502:physiology; D014785:Vision, Ocular / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*