Colour thresholds and receptor noise: behaviour and physiology compared

@article{Vorobyev2001ColourTA,
  title={Colour thresholds and receptor noise: behaviour and physiology compared},
  author={Misha Vorobyev and Robert Brandt and Dagmar Peitsch and Simon B. Laughlin and Randolf Menzel},
  journal={Vision Research},
  year={2001},
  volume={41},
  pages={639-653}
}
Colour Vision in Birds: Comparing behavioural thresholds and model predictions
TLDR
Four studies where chickens are trained to perform colour discrimination and tested the limits of their behavioural performance are presented, finding that chicken colour constancy could tolerate larger illumination changes when discriminating stimuli that were more different from each other.
More than noise: Context-dependant luminance contrast discrimination in a coral reef fish (Rhinecanthus aculeatus)
TLDR
It is confirmed that luminance contrast discrimination thresholds are context-dependent and should therefore be interpreted with caution, and the RNL model was unable to estimate threshold scaling across scenarios as predicted by the Weber-Fechner law.
A generalized equation for the calculation of receptor noise limited colour distances in n-chromatic visual systems
TLDR
A simple, single formula is derived for the computation of RNL distance between two measurements of colour, equivalent to the published di-, tri- and tetrachromatic equations of Vorobyev and Osorio (1998), and valid for colour visual systems with any number of types of noisy photoreceptors.
Flower signal variability overwhelms receptor-noise and requires plastic color learning in bees
TLDR
Observed behavioral color discrimination functions considering the respective conditioning procedures closely matched the range of signal variability for both honeybees and bumblebees, showing that color vision in bees cannot be described by a single fixed value, and plasticity is a key component of bee foraging behavior in natural environments.
More than noise: context-dependent luminance contrast discrimination in a coral reef fish (Rhinecanthus aculeatus)
TLDR
Analysis of luminance detection thresholds of triggerfish (Rhinecanthus aculeatus) reveals that the receptor noise limited (RNL) model needs to be used with caution in an achromatic context, confirming that luminance contrast discrimination thresholds are context dependent and should therefore be interpreted with caution.
Insect visual sensitivity to long wavelengths enhances colour contrast of insects against vegetation
TLDR
A potential advantage of red sensitivity in visual discrimination of insect colours against vegetation is suggested and the potential adaptive value of long wavelength sensitivity in insects is highlighted.
Mechanisms, functions and ecology of colour vision in the honeybee
TLDR
Major insights into the visual ecology of bees have been gained combining behavioural experiments and quantitative modelling, and asking how bee vision has influenced the evolution of flower colours and patterns is asked.
Comparative psychophysics of bumblebee and honeybee colour discrimination and object detection
TLDR
A comparison of the experiments suggests a tradeoff between colour discrimination and colour detection in these two species, limited by the need to pool colour signals to overcome receptor noise.
...
...

References

SHOWING 1-10 OF 51 REFERENCES
Receptor noise as a determinant of colour thresholds
  • M. VorobyevD. Osorio
  • Biology
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 1998
TLDR
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.
Voltage signal of photoreceptors at visual threshold
TLDR
Comparing receptor responses to behavioural responses in the light-adapted turtle and show that the receptor response at threshold is only a few microvolts in amplitude, which is much less important than at absolute threshold.
Single photon signals in fly photoreceptors and first order interneurones at behavioral threshold.
TLDR
The contrast sensitivity of the optomotor response of the fly Musca domestica was measured using a moving sinusoidal grating as the stimulus andCalibrations and the statistical properties of the bump train indicate that a bump represents one effective photon, implying that the bump : photon ratios are quantum capture efficiencies.
On spectral sensitivity in the goldfish Evidence for neural interactions between different “cone mechanisms”
Tetrachromacy, oil droplets and bird plumage colours
TLDR
This work examines the advantages of coloured oil droplets, UV vision and tetrachromacy for discriminating a diverse set of avian plumage spectra under natural illumination and finds that Discriminability is enhanced both by tetrACHromacy and coloured oil Droplets.
Vector model for normal and dichromatic color vision.
TLDR
Intensity-dependent parameters that stimulate the adaptation of receptors and opponent and nonopponent mechanisms are varied to predict a wide range of data for both normals and dichromats.
THE DISTRIBUTION AND NATURE OF COLOUR VISION AMONG THE MAMMALS
  • G. H. Jacobs
  • Biology
    Biological reviews of the Cambridge Philosophical Society
  • 1993
TLDR
This review has evaluated the proposition that relatively few mammalian species have a capacity for colour vision in mammals in the light of recent research on colour vision and its mechanisms in mammals and concluded that the baseline mammalian colour vision is argued to be dichromacy.
Retinal origins of the temperature effect on absolute visual sensitivity in frogs.
TLDR
It is concluded that the desensitization of dark‐adapted vision with rising temperature is a retinal effect composed of shortened summation time and lowered flash sensitivity (increased numbers of photons required for a threshold response) in ganglion cells.
...
...