Perception of Fourier and non-Fourier motion by larval zebrafish

Orger, M. B.; Smear, M. C.; Anstis, S. M.; Baier, Herwig

doi:10.1038/80649

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Perception of Fourier and non-Fourier motion by larval zebrafish

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Orger, M. B., Smear, M. C., Anstis, S. M., & Baier, H. (2000). Perception of Fourier and non-Fourier motion by larval zebrafish. Nature Neuroscience, 3(11), 1128-1133. doi:10.1038/80649.

Cite as: https://hdl.handle.net/21.11116/0000-0009-8363-3

Abstract

A moving grating elicits innate optomotor behavior in zebrafish larvae; they swim in the direction of perceived motion. We took advantage of this behavior, using computer-animated displays, to del:ermine what attributes of motion are extracted by the fish visual system. As in humans, first-order (luminance-defined or Fourier) signals dominated motion perception in fish; edges or other features had little or no effect when presented with these signals. Humans can see complex movements that lack first-order cues, an ability that is usually ascribed to higher-level processing in the visual cortex. Here we show that second-order (non-Fourier) motion displays induced optomotor behavior in zebrafish larvae, which do not have a cortex. We suggest that second-order motion is extracted early in the lower vertebrate visual pathway.