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Receptor noise as a determinant of colour thresholds
Open accessAbstract
Inferences about mechanisms at one particular stage of a visual pathway may be made from psychophysical thresholds only if the noise at the stage in question dominates that in the others. Spectral sensitivities, measured under bright conditions, for di-, tri-, and tetrachromatic eyes from a range of animals can be modelled by assuming that thresholds are set by colour opponency mechanisms whose performance is limited by photoreceptor noise, the achromatic signal being disregarded. Noise in the opponency channels themselves is therefore not statistically independent, and it is not possible to infer anything more about the channels from psychophysical thresholds. As well as giving insight into mechanisms of vision, the model predicts the performance of colour vision in animals where physiological and anatomical data on the eye are available, but there are no direct measurements of perceptual thresholds. The model, therefore, is widely applicable to comparative studies of eye design and visual ecology.
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Citations
Cited by
A review of the evolution of animal colour vision and visual communication signals
Osorio, D., & Vorobyev, M. (2008) · Vision Research · doi:10.1016/j.visres.2008.06.018 · Cited by 401
Self-citationPlumage Reflectance and the Objective Assessment of Avian Sexual Dichromatism
Cuthill, I. C., Bennett, A. T. D., Partridge, J. C., & Maier, E. J. (1999) · The American Naturalist · doi:10.1086/303160 · Cited by 391
Avian Visual Pigments: Characteristics, Spectral Tuning, and Evolution
Hart, N. S., & Hunt, D. M. (2007) · The American Naturalist · doi:10.1086/510141 · Cited by 339
Colour thresholds and receptor noise: behaviour and physiology compared
Vorobyev, M., Brandt, R., Peitsch, D., Laughlin, S. B., & Menzel, R. (2001) · Vision Research · doi:10.1016/s0042-6989(00)00288-1 · Cited by 309
Self-citationColour vision of domestic chicks
Osorio, D., Vorobyev, M., & Jones, C. D. (1999) · Journal of Experimental Biology · doi:10.1242/jeb.202.21.2951 · Cited by 284
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Metadata
- Authors
- Vorobyev, M., & Osorio, D.
- Venue
- Proceedings of the Royal Society of London. Series B: Biological Sciences
- Publisher
- The Royal Society
- Published
- 1998-03-07
- Volume
- 265
- Issue
- 1394
- Pages
- 351-358
- ISSN
- 0080-4649 (ISSN-L)
- 0962-8452
- 1471-2954
- OpenAlex
- W2092084985
- Cited by
- 1,266
- References
- 0
- FWCI
- 5.27
- Type
- journal article
- Language
- en
- Open access
- green
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- Vorobyev, M., & Osorio, D. (1998). Receptor noise as a determinant of colour thresholds. Proceedings of the Royal Society of London. Series B: Biological Sciences. https://doi.org/10.1098/rspb.1998.0302
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