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PIIS0960982218305475.pdf (5.47 MB)

Zebrafish differentially process colour across visual space to match natural scenes

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posted on 2023-06-09, 13:49 authored by Maxime Zimmermann, Noora Nevala, Takeshi YoshimatsuTakeshi Yoshimatsu, Daniel Colaco OsorioDaniel Colaco Osorio, Dan-Eric Nilsson, Philipp Berens, Thomas BadenThomas Baden
Animal eyes have evolved 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, in the horizontal and lower visual field bipolar cell terminals encoding achromatic and colour opponent visual features are systematically arranged into distinct layers of the inner retina. Third, above the frontal horizon, a high-gain ultraviolet-system piggy-backs onto retinal circuits, likely to support prey-capture.


Anisotropic retinal circuits for processing of colour and space in nature - Lister Institute Research Prize; G2503; LISTER INSTITUTE

Philip Leverhulme Prize - Biological Sciences; G2276; LEVERHULME TRUST

A window into the fly brain: "dual imaging" of neural circuits involved in locomotor behaviour in Drosophila; G2180; MRC-MEDICAL RESEARCH COUNCIL; MC_PC_15071

NeuroVisEco - Zebrafish vision in its natural context: from natural scenes through retinal and central processing to behaviour; G1871; EUROPEAN UNION; 677687

Anisotropic retinal circuits for processing of colour and space in nature; G2397; BBSRC-BIOTECHNOLOGY & BIOLOGICAL SCIENCES RESEARCH COUNCIL; BB/R014817/1

Optical Electrophysiology: Establishing fluorescence voltage imaging capability at Sussex Neuroscience; G2018; MRC-MEDICAL RESEARCH COUNCIL


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