Measuring vision using innate behaviours in mice with intact and impaired retina function

Storchi, Riccardo and Rodgers, Jessica and Gracey, Maille and Martial, Franck P and Wynne, Jonathan and Ryan, Sean and Twining, Carole J and Cootes, Timothy F and Killick, Rebecca and Lucas, Robert J (2019) Measuring vision using innate behaviours in mice with intact and impaired retina function. Scientific Reports, 9: 10396. ISSN 2045-2322

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Measuring vision in rodents is a critical step for understanding vision, improving models of human disease, and developing therapies. Established behavioural tests for perceptual vision, such as the visual water task, rely on learning. The learning process, while effective for sighted animals, can be laborious and stressful in animals with impaired vision, requiring long periods of training. Current tests that that do not require training are based on sub-conscious, reflex responses (e.g. optokinetic nystagmus) that don't require involvement of visual cortex and higher order thalamic nuclei. A potential alternative for measuring vision relies on using visually guided innate defensive responses, such as escape or freeze, that involve cortical and thalamic circuits. In this study we address this possibility in mice with intact and degenerate retinas. We first develop automatic methods to detect behavioural responses based on high dimensional tracking and changepoint detection of behavioural time series. Using those methods, we show that visually guided innate responses can be elicited using parametisable stimuli, and applied to describing the limits of visual acuity in healthy animals and discriminating degrees of visual dysfunction in mouse models of retinal degeneration.

Item Type:
Journal Article
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Scientific Reports
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Deposited On:
19 Jul 2019 08:15
Last Modified:
16 May 2024 02:27