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Discovering the circuit and molecular basis of inter-strain and inter-species differences in learning

Project description

Why some brains learn faster than others

Why can some people learn faster than others? It is a question that keeps puzzling neuroscientists. Even closely related animals, or individuals of the same species, can learn at different speeds. The biological roots of this variation are still largely unknown. The ERC-funded SMART project aims to solve the mystery with fruit fly larvae. Specifically, it will compare fast and slow learners, looking at everything from the way their brain cells connect to which genes switch on during learning. The idea is to uncover what actually makes one brain better at learning than another. The findings could completely change how we think about the brain. This could also open doors to new treatments for learning and memory problems.

Objective

Across the animal kingdom, closely-related species can differ in their learning ability, as can different
individuals of the same species, but the underlying causes of these differences are poorly understood.
Differences in learning could be due to different structural and functional properties of learning circuits which
in turn result from different patterns of gene expression. However, identifying homologous learning circuit
neurons in different species for comparing their synaptic connectivity, cellular-resolution functional properties
and transcriptomes is challenging in larger brains.

We have identified a strain of Drosophila melanogaster larvae that learns faster (after fewer training trials)
than others and a closely related Drosophilid species that learns faster than the D. melanogaster strains. We
will use this tractable genetic model system to compare learning circuits in faster/better and slower/worselearner
strains and species, in particular, their synaptic resolution connectomes; cellular-resolution activity
maps; and transcriptomes. We will then screen the differentially expressed genes to identify those that improve
learning and determine the way in which they affect connectivity and functional properties of learning circuits.

This project will reveal the architectural features of learning circuits that enhance learning and memory, as
well as the molecules that can transform slow/worse- into fast/better-learners and their mechanisms of action.
Uncovering the underlying structural, functional and genetic causes of variability in learning will not only
have a major impact on neuroscience but could also potentially inspire the development of better architectures
and algorithms for artificial intelligence and provide new avenues for treating learning and memory deficits.

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2024-ADG

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Host institution

THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE
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.

€ 1 888 696,00
Address
TRINITY LANE THE OLD SCHOOLS
CB2 1TN CAMBRIDGE
United Kingdom

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Region
East of England East Anglia Cambridgeshire CC
Activity type
Higher or Secondary Education Establishments
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Total cost

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Beneficiaries (2)

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