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FlyActiveComp

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Perceptual functions of Drosophila retinal movements and the underlying neuronal...

Perceptual functions of Drosophila retinal movements and the underlying neuronal computations Sensory perception is often an active process, and many animals move their sensory organs to actively shape their interactions with the outside world. Active sensing can provide animals with important information that impacts thei... ver más

31/07/2029

MPG

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

MAXPLANCKGESELLSCHAFT ZUR FORDERUNG DER WISSE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2024-02-23

ERC-2023-COG: ERC CONSOLIDATOR GRANTS Scope:Objectives

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1 Participantes

MPG

2.00M€ | Lider

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Duración del proyecto: 65 meses Fecha Inicio: 2024-02-23
Fecha Fin: 2029-07-31

Líder del proyecto

MAXPLANCKGESELLSCHAFT ZUR FORDERUNG DER WISSE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 2M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Sensory perception is often an active process, and many animals move their sensory organs to actively shape their interactions with the outside world. Active sensing can provide animals with important information that impacts their survival and overall fitness. We recently found that Drosophila adjust their visual input by moving their retinas underneath the stationary lenses of the compound eye. The discovery of retinal movements in the fly provides us with a fantastic toolbox to study the cellular mechanisms of active visual computation. We found several types of Drosophila retinal movements, including an optokinetic reflex that likely helps gaze stabilization. The functions of other types of retinal movements we described remain to be shown. We found tiny movements that shift the retina only by a fraction of the angle between photoreceptors, resembling so-called ‘microsaccades’ in primates. In humans, these eye movements happen during visual fixation and their functions are still not entirely clear. We want to understand how flies, which have a very different visual system, benefit from such movements. We also found large convergent, or cross-eyed, retinal movements that happen when flies cross obstacles in tethered walking. Genetic silencing of retinal motoneurons suggested a role of these movements in depth perception. We will probe the visual system during vergence movements to understand how the neural system uses dynamic input to gauge distances. The overarching goal is to unravel neuronal computations that use actively generated visual input to extract information about the world. The fly’s relatively simple nervous system, its rich visual behavior, and outstanding experimental tools will allow for detailed insights into active sensory computation on a cellular level. Results from this work will generate novel insights into how evolutionary distant brains solve similar visual challenges and elucidate differences and common principles across species.

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