Motion computation and visual orientation in flies

Egelhaaf, M.; Borst, Alexander

doi:10.1016/0300-9629(93)90144-S

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Motion computation and visual orientation in flies

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Borst, Alexander
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Egelhaaf, M., & Borst, A. (1993). Motion computation and visual orientation in flies. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology, 104(4), 659-673. doi:10.1016/0300-9629(93)90144-S.

Cite as: https://hdl.handle.net/21.11116/0000-0009-C107-5

Abstract

1.

1. Visual orientation greatly relies on the evaluation of the motion patterns received by the eyes when the animal moves around.
2.

2. In a combination of behavioral, neurophysiological and pharmacological analysis and modelling, the mechanisms are established by which the visual system of the fly extracts three types of-basic retinal motion patterns.
3.

3. Coherent retinal large-field motion as is induced during deviations of the animal from its course, image expansion occurring when the animal approaches an obstacle, and relative motion which is induced when a nearby object is passed in front of its background.
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4. Separate neuronal networks are specifically tuned to each of these motion patterns and make use of them in three different orientation tasks: in compensatory course stabilization, the control of landing behaviour and the fixation of objects.