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Closing the loop in dynamic vision – from single photons to behaviour in extreme light environments

Project description

Study sheds light on how insects’ neurons process light variations in the environment

The rapid variation of light and shade in natural environments can disrupt vision, a challenge that many animals successfully navigate daily. The ERC-funded DynamicVision project will explore how sensory information is processed within the limited bandwidth of neural circuits. Using nocturnal moths as a model, researchers will investigate the closed-loop nature of animal behaviour, where senses guide movements, which in turn shape sensory input. By designing an innovative imaging system, researchers will quantify the dynamics of visual environments from the moth’s perspective and study how neurons compensate for light variations. Utilising a unique facility for large-scale animal tracking, the team will record flight behaviours with unprecedented precision, providing a coherent framework for studying the neural basis of natural behaviour in dynamic light environments.

Objective

Driving along a tree-lined avenue, we have all experienced how the rapid succession of light and shade disrupts our vision. Such conditions push even synthetic sensors to their limits, but many animals master these challenges on a dailyand nightlybasis. Indeed, a high dynamic range of sensory information is a hallmark of natural environments. Explaining how sensory information is processed with the limited bandwidth in neural circuits is key to a central goal of neuroscience: understanding the neural control of behaviour in natural contexts. This question extends beyond the processing of dynamic input by nervous systems to the closed-loop nature of animal behaviour itself: as senses guide an animals movements, the movements in turn shape the sensory input. It necessitates a paradigm-shift to a holistic approach considering dynamic inputs, neural processing and behavioural strategies in concert. I propose visually-guided flight in nocturnal moths as uniquely suited for approaching this challenge. Probing the system in dim light, when vision operates at its limits, offers straightforward performance readouts for all stages of the control loop. To do so, we will design a novel imaging system to quantify the dynamics of natural visual environments from a flying insects perspective. We will then measure how dynamic tuning adjusts peripheral neurons to compensate for these spatiotemporal light variations, and how they are integrated with movement predictions in motion neurons, to guide flight behaviour. Using a one-of-a-kind facility for large-scale animal tracking, we will record the moths flight behaviour at unprecedented precision to reveal the strategies that optimise sensory acquisition in these challenging light conditions. Combining all stages, this project will provide a coherent framework for studying the neural basis of natural behaviour in dynamic light environmentsusing a unique, ecologically impactful model to close the loop from sensing to acting.

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Topic(s)

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Call for proposal

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(opens in new window) ERC-2023-STG

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Host institution

UNIVERSITAT KONSTANZ
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.

€ 1 500 000,00
Address
UNIVERSITATSSTRASSE 10
78464 Konstanz
Germany

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Region
Baden-Württemberg Freiburg Konstanz
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.

€ 1 500 000,00

Beneficiaries (1)

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