Guillaume Bellec

@bellecguill.bsky.social

AI, Neuroscience and Music

How can the brain learn the hidden hierarchical structure from high dimensional data? In our latest work, we use synthetic datasets to analyze two classes of bio-plausible learning rules: variants of Direct Feedback Alignment, and local self-supervised learning. We find only the latter succeeds.

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this is such a powerful way to support the international neuroscience community, and a massively rewarding experience and great line on your CV to boot. please join us!

Neuromatch@neuromatch.bsky.social · 3mo ago

We’re looking for PhD-level researchers to volunteer as Professional Development Mentors for our July 2026 courses in #CompNeuro, #DeepLearning, #NeuroAI, and #ClimateScience. The commitment is just 3 hours total (three 1-hour sessions). Learn more and apply: neuromatch.io/mentorship/

Guide learning, inspire growth. 
Apply to be a volunteer Professional Development Mentor before 29 May, 2026

For those interested in normalized gradient methods and optimal transport: I introduce a new class of "spectral" Wasserstein distances for which spectrally normalized gradient descent (Muon but without momentum and small step size ...) is a spectral-W gradient flow: arxiv.org/abs/2604.04891

Muon Dynamics as a Spectral Wasserstein Flow

Gradient normalization is central in deep-learning optimization because it stabilizes training and reduces sensitivity to scale. For deep architectures, parameters are naturally grouped into matrices ...

arxiv.org

Wanna do neuroscience in Paris but can't find interesting lab? Want to come do a sabbatical but don't know who to collaborate? Check this webpage aggregating ~all the neuroscience labs (+200) in Paris. ⚠️only the information of 'verified' profiles is reliable⚠️ Please retweet 🙏 parisneuro.fr

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I just made an account and voted for this biology laboratory made of LEGO to "promote biological research and inspire more people into the world of biology". They need 10K votes. Reposting and/or voting below would be helpful. 🤗 beta.ideas.lego.com/product-idea...

Biological Laboratory | LEGO® Ideas

This is a two-floor realistic Biological Laboratory building. In this design, I try to tell stories about biologists, introduce biology concepts to general publ…

beta.ideas.lego.com