Spherical arena reveals optokinetic response tuning to stimulus location, size, and frequency across entire visual field of larval zebrafish

Dehmelt, Florian Alexander, Meier, Rebecca, Hinz, Julian, Yoshimatsu, Takeshi, Simacek, Clara A, Huang, Ruoyu, Wang, Kun, Baden, Tom and Arrenberg, Aristides B (2021) Spherical arena reveals optokinetic response tuning to stimulus location, size, and frequency across entire visual field of larval zebrafish. Elife, 10. a63355. ISSN 2050-084X

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Abstract

Many animals have large visual fields, and sensory circuits may sample those regions of visual space most relevant to behaviours such as gaze stabilisation and hunting. Despite this, relatively small displays are often used in vision neuroscience. To sample stimulus locations across most of the visual field, we built a spherical stimulus arena with 14,848 independently controllable LEDs. We measured the optokinetic response gain of immobilised zebrafish larvae to stimuli of different steradian size and visual field locations. We find that the two eyes are less yoked than previously thought and that spatial frequency tuning is similar across visual field positions. However, zebrafish react most strongly to lateral, nearly equatorial stimuli, consistent with previously reported spatial densities of red, green and blue photoreceptors. Upside-down experiments suggest further extra-retinal processing. Our results demonstrate that motion vision circuits in zebrafish are anisotropic, and preferentially monitor areas with putative behavioural relevance.

Item Type: Article
Keywords: neuroscience, zebrafish
Schools and Departments: School of Life Sciences > Neuroscience
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 17 Jun 2021 06:46
Last Modified: 17 Jun 2021 07:01
URI: http://sro.sussex.ac.uk/id/eprint/99834

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