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The Variation of Cyclotorsion with Vergence and Elevation

  • Jim Ivins
  • John Porrill
  • John Frisby
Chapter

Abstract

Several recent studies of human eye movements have revealed systematic departures from Listing’s law during changes in vergence. Two kinematic models of eye movements predict a vergence-dependent contribution to torsion T proportional to elevation E and vergence V (angles in radians):
$$ {\text{T = kEV/2}}$$

Keywords

Target Motion Line Style Torsional State Binocular Fixation Monocular Fixation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Enright J T (1990) Stereopsis, cyclotorsional “noise” and the apparent vertical. Vis Res 30: 1487–1497.PubMedCrossRefGoogle Scholar
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  3. Ivins J, Porrill J, Frisby J (in press) Instability of torsion during smooth asymmetric vergence. Vis ResGoogle Scholar
  4. Minken AWH, Gielen CCAM, Van Gisbergen JAM (1995) An alternative 3D interpretation of Hering’s equal-in-nervation law for version and vergence eye movements. Vis Res 35: 93–102.PubMedCrossRefGoogle Scholar
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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • Jim Ivins
    • 1
  • John Porrill
    • 1
  • John Frisby
    • 1
  1. 1.AI Vision Research UnitUniversity of SheffieldEngland

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