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MELANOPSIN CONTRIBUTION TO PATTERNS DISCIRMINATION IN DIURNAL AND NOCTURNAL RODENTS

Project description

Better understanding of the visual system through melanopsin

Melanopsin is a type of photopigment that belongs to a larger family of light-sensitive retinal proteins. Recent data from studies on mice shows that melanopsin can provide the brain with information about spatial patterns during the day, thus complementing the activity of cones in the representation of larger amplitude and coarser patterns in brightness. The EU-funded MEL-ROD project aims to determine how melanopsin's role in supporting vision differs between nocturnal mice and a diurnal murid with strong cone-based daytime vision. The project plans to make use of cutting-edge technology that will allow, for the first time, patterns visible only to melanopsin to be generated.

Objective

Three types of retinal photoreceptors are responsible for light detection: rods, cones and intrinsically photosensitive retinal ganglion cells (ipRGCs) containing melanopsin. Until recently, it was universally assumed that daytime vision originates with cones, dim light vision with rods, leaving ipRGCs to drive sub-conscious reflex responses to changes in ambient light (e.g. circadian photoentraiment). However, very recent data from mice has revolutionized vision science by showing that melanopsin can also provide the brain with information about the spatial patterns during the day, complementing the activity of cones in the representation of larger amplitude and coarser patterns in brightness. The proposed project is aimed to determine how melanopsin and cones work together to create images in nocturnal mice and in a diurnal murid (Rhabdomys) with strong cone-based daytime vision, respectively. We will take advantage of technological edge in multi-primary visual display (mVDU) design that allows, for the first time, patterns visible only to melanopsin to be generated. We will apply the mVDU technology to in vivo multi-unit electrophysiological recordings from the visual thalamus (the dorsal lateral geniculate nucleus) and behavioural experiments on melanopsin sufficient and deficient mice created by optogenetical manipulation of ipRGCs. We hypothesize that there will be significant differences in the melanopsin contribution to pattern discrimination between chosen night and day active animals due to the difference in their retinal structure (rod-cone ratio). We believe that the proposed research will contribute to better understanding of the visual system and lead to a step change in performance of image capture and display technologies by adjusting their design to take account of melanopsin. The applicant will benefit from the project with new skills, knowledge and the experience to launch her own research group in the future.

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Topic(s)

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2019

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Coordinator

THE UNIVERSITY OF MANCHESTER
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 224 933,76
Address
OXFORD ROAD
M13 9PL Manchester
United Kingdom

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Region
North West (England) Greater Manchester Manchester
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 224 933,76
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