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Limits of colour vision in dim light

Publiceringsår: 2010
Språk: Engelska
Sidor: 454-459
Publikation/Tidskrift/Serie: Opthalmic and Physiological Optics
Volym: 30
Nummer: 5
Dokumenttyp: Konferensbidrag
Förlag: Wiley-Blackwell Publishing, Inc

Sammanfattning

Humans and most vertebrates have duplex retinae with multiple cone types for colour vision in bright light, and one single rod type for achromatic vision in dim light. Instead of comparing signals from multiple spectral types of photoreceptors, such species use one highly sensitive receptor type thus improving the signal-to-noise ratio at night. However, the nocturnal hawkmoth Deilephila elpenor, the nocturnal bee Xylocopa tranquebarica and the nocturnal gecko Tarentola chazaliae can discriminate colours at extremely dim light intensities. To be able to do so, they sacrifice spatial and temporal resolution in favour of colour vision. We review what is known about colour vision in dim light, and compare colour vision thresholds with the optical sensitivity of the photoreceptors in selected animal species with lens and compound eyes.

Disputation

Nyckelord

  • Biology and Life Sciences
  • intensity threshold
  • dim light vision
  • Colour vision
  • compound eyes
  • optical sensitivity
  • lens eyes

Övriga

20th Biennial Symposium of the International-Colour-Vision-Society
2014-07-26
Braga, Portugal
Published
Yes
  • ISSN: 0275-5408

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