Behavioural determination of the contrast sensitivity function of the eagle Aquila audax.

@article{Reymond1981BehaviouralDO,
  title={Behavioural determination of the contrast sensitivity function of the eagle Aquila audax.},
  author={L Reymond and Joseph Wolfe},
  journal={Vision research},
  year={1981},
  volume={21 2},
  pages={263-71}
}
The results of behavioural experiments determining contrast sensitivity functions (CSFs) for the eagle Aquila audax and man at two low luminances are compared. At 20cd/m2 the shapes of the CSFs are similar: both species show a peak in sensitivity with attenuation of higher and lower spatial frequencies. The human is more sensitive at all frequencies and up to one hundred times more sensitive at low frequencies. The relatively poor performance of the eagle under these conditions may result from… CONTINUE READING

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