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Priors and Inference in Superior colliculus during Movement

Project description

Anticipating the future to guide movement

Animals do not simply react to their environment, they also constantly predict what will happen next, using past experience to guide rapid and flexible decisions. Understanding how the brain forms and updates these predictions during natural behaviour remains a fundamental challenge in neuroscience. With the support of the Marie Skłodowska-Curie Actions programme, the PRISM project will develop a novel behavioural task where mice pursue a moving target governed by probabilistic rules, enabling rigorous study of expectation and prediction. Using high-density electrophysiology and optogenetic tools in freely moving animals, researchers will investigate how the superior colliculus – a key midbrain hub for sensorimotor integration – represents and updates internal predictions. This study will shed new light on the neural basis of adaptive decision-making.

Objective

To survive, animals must do more than react to immediate sensory input; they must predict what is likely to happen next. This ability to integrate past experience with current information is essential for fast and adaptive decision-making. Yet how the brain forms, updates, and uses such expectations during natural behavior remains poorly understood, particularly in naturalistic settings where sensory cues are ambiguous, and decisions must be made rapidly and flexibly.
In this project, I will develop a novel behavioral task in which mice pursue a physical target moving according to probabilistic rules, bridging the gap between classical conditioning paradigms and naturalistic goal-directed behavior. By changing these rules, I will examine how mice form internal models of their environment and adapt to new patterns. I will test whether animals show predictive behaviours that reflect prior expectations, especially when sensory input becomes uncertain. Their behaviour will be interpreted within a Bayesian inference framework, allowing rigorous comparison to an ideal observer model.
At the neural level, I will focus on the superior colliculus, a midbrain hub involved in integrating sensory information to guide movement. Using high-density electrophysiology in freely moving animals, I will investigate how prior expectations are represented and updated in real time. I will complement this with targeted manipulations of inputs to the superior colliculus using optogenetic and chemogenetic tools to test how these circuits contribute to forming and updating internal models.
While I already have strong expertise in behavioural tracking and neuronal recordings, this project will provide me with essential training in Bayesian modelling and causal circuit perturbation, key tools for next-generation systems neuroscience. Hosted at a world-renowned institute, this fellowship will deepen my interdisciplinary skillset and support my transition toward an independent research career.

Fields of science (EuroSciVoc)

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Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

INSTITUTE OF SCIENCE AND TECHNOLOGY AUSTRIA
Net EU contribution
€ 230 184,72
Address
Am Campus 1
3400 Klosterneuburg
Austria
Region
Ostösterreich Niederösterreich Wiener Umland/Nordteil
Activity type
Higher or Secondary Education Establishments
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Total cost
No data