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ISSN
0899-7667
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1530-888X
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2.21

Neural Computation

November 1993, Vol. 5, No. 6, Pages 856-868
(doi: 10.1162/neco.1993.5.6.856)
© 1993 Massachusetts Institute of Technology
Two-Dimensional Motion Perception in Flies
Article PDF (619.06 KB)
Abstract

We study two-dimensional motion perception in flies using a semicircular visual stimulus. Measurements of both the H1-neuron and the optomotor response are consistent with a simple model supposing spatial integration of the outputs of correlation-type motion detectors. In both experiment and model, there is substantial H1 and horizontal (yaw) optomotor response to purely vertical motion of the stimulus. We conclude that the fly's optomotor response to a two-dimensional pattern, depending on its structure, may deviate considerably from the direction of pattern motion.