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Zebrafish differentially process colour across visual space to match natural scenes

Maxime JY Zimmermann, Noora E Nevala, Takeshi Yoshimatsu, Daniel Osorio, Dan-Eric Nilsson, Philipp Berens, View ORCID ProfileTom Baden
doi: https://doi.org/10.1101/230144
Maxime JY Zimmermann
1School of Life Sciences, University of Sussex, UK
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Noora E Nevala
1School of Life Sciences, University of Sussex, UK
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Takeshi Yoshimatsu
1School of Life Sciences, University of Sussex, UK
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Daniel Osorio
1School of Life Sciences, University of Sussex, UK
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Dan-Eric Nilsson
2Lund Vision Group, University of Lund, Sweden
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Philipp Berens
3Institute of Ophthalmic Research, University of Tübingen, Germany
4Bernstein Centre for Computational Neuroscience, University of Tübingen, Germany
5Centre for Integrative Neuroscience, University of Tübingen, Germany
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Tom Baden
1School of Life Sciences, University of Sussex, UK
3Institute of Ophthalmic Research, University of Tübingen, Germany
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  • ORCID record for Tom Baden
  • For correspondence: t.baden@sussex.ac.uk
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Summary

Animal eyes evolve to process behaviourally important visual information, but how retinas deal with statistical asymmetries in visual space remains poorly understood. Using hyperspectral imaging in the field, in-vivo 2-photon imaging of retinal neurons and anatomy, here we show that larval zebrafish use a highly anisotropic retina to asymmetrically survey their natural visual world. First, different neurons dominate different parts of the eye, and are linked to a systematic shift in inner retinal function: Above the animal, there is little colour in nature and retinal circuits are largely achromatic. Conversely, the lower visual field and horizon are colour-rich, and are predominately surveyed by chromatic and colour-opponent circuits that are spectrally matched to the dominant chromatic axes in nature. Second, above the frontal horizon, a high-gain ultraviolet-system piggy-backs onto retinal circuits, likely to support prey-capture. Our results demonstrate high functional diversity among single genetically and morphologically defined types of neurons.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted December 07, 2017.
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Zebrafish differentially process colour across visual space to match natural scenes
Maxime JY Zimmermann, Noora E Nevala, Takeshi Yoshimatsu, Daniel Osorio, Dan-Eric Nilsson, Philipp Berens, Tom Baden
bioRxiv 230144; doi: https://doi.org/10.1101/230144
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Zebrafish differentially process colour across visual space to match natural scenes
Maxime JY Zimmermann, Noora E Nevala, Takeshi Yoshimatsu, Daniel Osorio, Dan-Eric Nilsson, Philipp Berens, Tom Baden
bioRxiv 230144; doi: https://doi.org/10.1101/230144

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