Fabrizio Musacchio

@fabmusacchio.bsky.social

Physicist by training, working in computational neuroscience at the @dzne.science. Interested in how neural dynamics and learning shape brain function and behavior, using modeling and data analysis. 🌍fabriziomusacchio.com 🐘mastodon.social/@FabMusacchio

This is such cool work, especially the idea that on-manifold geometry is "imposed by the circuit's intrinsic dynamics" and not just stim encoding. We think something similar happens in human hippocampus—though tbf we haven't characterized the stimulus encoding dims yet bsky.app/profile/jhen...

Eliezyer de Oliveira@eliezyer.bsky.social · 2d ago

After a long journey through review, our paper is finally out in Nature Communications. We started with a simple problem: The visual cortex is strongly modulated by movement. So how can it represent the visual world without movement interfering with everything? www.nature.com/articles/s41...

Approximating the Lorenz attractor with a chaotic leaky water wheel. The orange dot is the centre of mass of the water. It traces (a projection of) the familiar attractor as the wheel spins seemingly randomly left and right.

But overall the main point is about the power of the manifold. Some people have been pushing this, for example, here’s a fantastic review arguing that place cells dont really remap as we've been taught - they just project differently depending on context. www.nature.com/articles/s41...

Remapping revisited: how the hippocampus represents different spaces - Nature Reviews Neuroscience

The location-specific firing of hippocampal place cells changes when an animal enters a new environment, a phenomenon known as ‘remapping’. In this Perspective, André A. Fenton challenges standard mod...

nature.com

Very exciting theoretical work from Soledad Ganzalo Cogno´s new theory group. Will unquestionably guide my own future work. Congratulations, Soledad and team!

Soledad Gonzalo Cogno@soledad-gcogno.bsky.social · 7d ago

📢🔥🎉🤩 New preprint from the lab, in collaboration with @clopathlab.bsky.social ! What network mechanisms generate a diversity of neural activity sequences within and across circuits? www.biorxiv.org/content/10.6... 🧵👇

Subspaces may be formed and organized via brain waves. "Low-dimensional spiking trajectories in subspace can be seen as the spiking-level expression of broader wave-based control signals that impose global structure on neural activity" doi.org/10.1523/JNEU...

Analog Cognition and Consciousness

Cognition and consciousness may arise from bidirectional interactions between neuronal spiking and rhythmic electric field activity (brain waves). Goal-directed behavior relies on top-down control to ...

doi.org

An animal’s body is in constant conversation with itself — & HHMI Janelia scientists have built a way to listen in. WHOLISTIC simultaneously records real-time activity from nearly every cell in a living larval zebrafish, a 1st step in understanding more complex bodies like ours: bit.ly/4xMR1Ww.

Terence Tao says AI companies are harming mathematics by dropping new results without engaging with academia. “These companies are dumping carcasses of raw meat onto our table and saying ‘here you go, I solved your food problem’ and then they just leave." www.newscientist.com/article/2588...

Terence Tao: AI companies are harming mathematics | New Scientist

AI companies are making new mathematical discoveries at a rapid pace but not sticking around to help unpick the new proofs. That is not the way to advance our understanding, says mathematician Terence...

newscientist.com

New preprint by @shtakasu.bsky.social , Gast & @antihebbiann.bsky.social, showing that local exc/inh connectivity balance can strongly reshape #RecurrentNetwork dynamics, even when the connectivity spectrum remains unchanged. #CompNeuro #TheoreticalNeuroscience #RandomNetworks #PopulationDynamics

FIG. 1. Numerical simulations illustrating how local connectivity balance affects network dynamics.
Ann Kennedy@antihebbiann.bsky.social · last wk.

New preprint on our favorite theme: same connectome + different neurons = different dynamics. @shtakasu.bsky.social looked at detail balance (E+I inputs sum to 0) in RNNs w/different activation functions, finding that it stabilized some networks and destabilized others. arxiv.org/html/2608.30...

How does the brain solve complex tasks on just 20W of power? 💡 In a new Q&A with the Sainsbury Wellcome Centre, Dr. Panayiota Poirazi explains how active dendrites & synaptic clustering allow neurons to maximize computational efficiency. Read the Q&A here: www.sainsburywellcome.org/qa/smarter-w...

Smarter wiring: How dendrites make neurons more efficient | Sainsbury Wellcome Centre

In this Q&A, SWC Seminar Speaker Dr Panayiota Poirazi, Research Director at IMBB, discusses her latest work on how dendrites facilitate efficiency in the brain.

sainsburywellcome.org