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Journal of Comparative Physiology A

, Volume 186, Issue 1, pp 45–55 | Cite as

Optomotor course control in flies with largely asymmetric visual input

  • R. Kern
  • M. Egelhaaf
ORIGINAL PAPER

Abstract

We have studied freely flying and walking flies as well as flies flying in a flight simulator in order to discover how functionally blinding one of the eyes affects the fly's ability to move straight. It is hard to tell just by observing the animals' movements whether they have been deprived of vision in one eye. Statistical analysis is need to show that there are differences in the locomotory paths of monocular and binocular flies: monocular flies tend to turn slightly towards the side of the seeing eye. It is possible that the superimposed translational and rotational optic flow fields, generated on the trajectory of monocular flies, sum to zero net flow. This overall flow over the retina of the open eye might lead to a state of optomotor equilibrium.

Key words Vision Optic flow Optomotor behaviour Course control Fly 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • R. Kern
    • 1
  • M. Egelhaaf
    • 1
  1. 1.Lehrstuhl für Neurobiologie, Fakultät für Biologie, Universität Bielefeld, Postfach 10 01 31, D-33501 Bielefeld, Germany e-mail: roland.kern@biologie.uni-bielefeld.de Fax: +49-521-106-6038DE

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