Factors influencing velocity coding in the human visual system.

@article{Orban1984FactorsIV,
  title={Factors influencing velocity coding in the human visual system.},
  author={Guy A. Orban and Joost T. M. de Wolf and Helga Maes},
  journal={Vision research},
  year={1984},
  volume={24 1},
  pages={33-9}
}
Differential velocity detection in the fovea was measured over a wide range of velocities (0.25-256 degrees/sec). Differential thresholds were minimum (about 6%) for intermediate velocities (4-32 degrees/sec). Velocity judgements were shown not to depend on duration judgments. The U-shaped curve relating differential velocity detection and velocity was preserved at different background levels and different contrasts. The physiological correlates of these observations are discussed. 
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