Spatial visual acuity of the falcon, Falco berigora: A behavioural, optical and anatomical investigation

@article{Reymond1987SpatialVA,
  title={Spatial visual acuity of the falcon, Falco berigora: A behavioural, optical and anatomical investigation},
  author={Liz Reymond},
  journal={Vision Research},
  year={1987},
  volume={27},
  pages={1859-1874}
}
  • L. Reymond
  • Published 31 December 1987
  • Psychology
  • Vision Research
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The eyes of barn owls (Tyto alba pratincola) display very little aberrations, and have thus excellent optical quality. In a series of behavioral experiments, we tested whether this presumably
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Fundamentals of spatial vision in the barn owl (Tyto alba pratincola) : ocular aberrations, grating acuity, contrast sensitivity, and vernier acuity
TLDR
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Comparison of functional and anatomical estimations of visual acuity in two species of coral reef fish
TLDR
Comparison of behavioural and anatomical estimates of visual acuity in coral reef fish reveals higher values for anatomical estimates but these may not be indicative of actual performance, and suggests that there is unlikely to be a simple scaling factor to link the two measures across all fish species.
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Falcon visual sensitivity to grating contrast
TLDR
It is reported that the cut-off frequency (a measure of visual acuity) is twice the expected value and is the same for kestrel and human eyes.
Falcon visual acuity.
TLDR
This behavioral test of falcon acuity supports the common belief that Falconiformès have superb vision, although Falcon acuity was much more dependent on lumanance, declining sharply with decreases in luminance.
Monocular versus Binocular Visual Acuity
TLDR
The technique of Schade1 is modified so that a grating target is generated on an oscilloscope by supplying suitable signals to the x, y and z axes, and it could be continuously varied both in contrast and fineness without the mean luminance of the screen changing.
Ocular Optical Filtering
TLDR
The purpose of this chapter is to review the effects of optical filtering on eye function emphasizing such unresolved issues, for example, as the function of optical filters in the eyes of animals with high (suprahuman) visual acuity.
Information capacity of eyes
A comparative study of deep avian foveas.
TLDR
Comparisons of foveal cell densities across species showed an increase in the average number of cells/visual degree2 with increasing eye size; similarly, an increase occurred in receptor nuclei relative to ganglion cell density; thus, smaller eyes showed a coarser retinal grain and a lower 'concidence ratio' of receptors toganglion cells than was found in the largest eyes.
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