Nocturnal colour vision - not as rare as we might think
Författare
Summary, in English
The dual retina of humans and most vertebrates consists of multiple types of cone for colour vision in bright light and one single type of rod, leaving these animals colour-blind at night. Instead of comparing the signals from different spectral types of photoreceptors, they use one highly sensitive receptor, thus improving the signal-to-noise ratio. However, nocturnal moths and geckos can discriminate colours at extremely dim light intensities when humans are colour-blind, by sacrificing spatial and temporal rather than spectral resolution. The advantages of colour vision are just as obvious at night as they are during the day. Colour vision is much more reliable than achromatic contrast, not only under changing light intensities, but also under the colour changes occurring during dusk and dawn. It can be expected that nocturnal animals other than moths and geckos make use of the highly reliable colour signals in dim light.
Publiceringsår
2006
Språk
Engelska
Sidor
781-788
Publikation/Tidskrift/Serie
Journal of Experimental Biology
Volym
209
Issue
5
Dokumenttyp
Artikel i tidskrift
Förlag
The Company of Biologists Ltd
Ämne
- Zoology
Nyckelord
- colour vision
- vision
- colour constancy
- sensitivity
- night vision
Status
Published
Forskningsgrupp
- Lund Vision Group
ISBN/ISSN/Övrigt
- ISSN: 1477-9145