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Gonzalo de Polavieja

@polavieja.bsky.social
2.4K followers 1.4K following 86 posts

Scientist at Champalimaud Foundation (polaviejalab.org) and co-founder of Algebraic AI (algebraic.ai). #Maths4AI #AI4Science, #BehaviorAI #NeuroAI #CognitionAI #CollectiveBehavior

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Reposted by Gonzalo de Polavieja
Anthony Ramnauth @philoneurosci.bsky.social · 09/09/2026
New publication from @lukesjulson.bsky.social lab and collaborators! #Neocortical long-range #inhibition promotes #cortical #synchrony and #sleep doi.org/10.1038/s415...
doi.org
Neocortical long-range inhibition promotes cortical synchrony and sleep - Nature
In mice, a sparse population of sleep-active long-range inhibitory neurons in the neocortex promote widespread cortical synchronization and sleep, revealing a cortical mechanism that co...
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Matteo Carandini @carandinilab.net · 09/09/2026
If you thought "everything is everywhere" in the brain: inactivations reveal a clear distinction of labor. Sensory areas sense, colliculus promotes eligible actions (!), and prefrontal cortex integrates. The role of superior colliculus in a logistic decision www.biorxiv.org/content/10.6...
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Misha Ahrens @mishaahrens.bsky.social · 09/09/2026
Whole-body cellular activity imaging in zebrafish, headed by Virginie Ruetten @vmsruetten.bsky.social - new paper is out: www.nature.com/articles/s41...
nature.com
Imaging cellular activity across all organs reveals body-wide circuits - Nature
An imaging system developed to record cellular activity throughout the whole body of zebrafish captures cellular organ dynamics and identifies multiple distributed circuits.
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Gabriel Peyré @gabrielpeyre.bsky.social · 16/06/2026
The alpha version of my new book "Optimal Transport for Machine Learners" is out, with in particular an online version with interactive figures www.gpeyre.com/ot4ml/
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Small Brain Cognition Lab @minibraincognition.bsky.social · 08/05/2026
doi.org/10.1038/s414... Vision is often modelled with tuned filters, noise and fixed bandwidth limits. But speed, dynamic range and hyperacuity need not be assumed. See how they emerge from real biophysics: quantal sampling, refractory dynamics, cellular motion and synaptic high-frequency jumping.
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arXiv cs.LG Machine Learning @cslg-bot.bsky.social · 05/05/2026
Fernando Martin-Maroto, Nabil Abderrahaman, Gonzalo G. de Polavieja: Beyond ECE: Calibrated Size Ratio, Risk Assessment, and Confidence-Weighted Metrics arxiv.org/abs/2605.01796 arxiv.org/pdf/2605.01796 arxiv.org/html/2605.01796
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Gonzalo de Polavieja @polavieja.bsky.social · 18/04/2026
Improbable music from Angine de Poitrine, share.google/jD11y44NW3Hd...
share.google
Angine de Poitrine - Full Performance (Live on KEXP)
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Gonzalo de Polavieja @polavieja.bsky.social · 17/04/2026
Final version of record here: elifesciences.org/articles/107... Enjoy tracking
elifesciences.org
New idtracker.ai rethinks multi-animal tracking as a representation learning problem to increase accuracy and reduce tracking time
Identification of each animal in a collective becomes possible even when individuals are never all visible simultaneously, enabling faster and more accurate analysis of collective behavior.
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eLife @elife.bsky.social · 28/02/2026
🛠️ February’s most-read Tools and Resources paper introduces idtracker.ai to rethink multi-animal tracking: buff.ly/Ho0b3xz Learn more about publishing your tools or resources with us: buff.ly/pivLQX0
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Ann Kennedy @antihebbiann.bsky.social · 14/01/2026
Excited to return to Lisbon this June for the epic 3-week Cajal course on Quantitative Approaches to Behavior and VR! 🐀🐟🪰🏃‍♀️🎥🖥📈🧪 Applications are open through Feb 13! Come join us. cajal-training.org/on-site/quan...
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Sachin Sethi @sethisachin.bsky.social · 06/01/2026
www.cell.com/cell/fulltex... We had a lot of fun working on this project (led by Itzel Ishida, not on bluesky). Some interesting highlights from the paper -
cell.com
Neuronal calcium spikes enable vector inversion in the Drosophila brain
In the fly central complex, PFNa neurons switch from firing classical sodium spikes when depolarized to firing non-canonical T-type calcium spikes when hyperpolarized. This bidirectional spiking allow...
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Gonzalo de Polavieja @polavieja.bsky.social · 02/12/2025
Call is out for Champalimaud International Neuroscience Doctoral Programme 2026! docs.google.com/forms/d/e/1F...
docs.google.com
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arXiv math.RA Rings and Algebras @mathra-bot.bsky.social · 04/11/2025
Fernando Martin-Maroto, Antonio Ricciardo, Gonzalo G. de Polavieja: The pairwise distributive law of semilattice congruences arxiv.org/abs/2511.00892 arxiv.org/pdf/2511.00892 arxiv.org/html/2511.00892
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arxiv math.RA @arxiv-math-ra.bsky.social · 04/11/2025
Fernando Martin-Maroto, Antonio Ricciardo, Gonzalo G. de Polavieja The pairwise distributive law of semilattice congruences arxiv.org/abs/2511.00892
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José A. Alonso @jalonso.eurosky.social · 06/09/2025
An introduction to Lean 4. ~ E. Cosme Llópez, L. Gong. www.uv.es/coslloen/Arx... #ITP #LeanProver #FunctionalProgramming
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Iris van Rooij 💭 @irisvanrooij.bsky.social · 28/07/2025
Sad to hear that Margaret Boden, pioneer in cognitive science and artificial intelligence, has passed away. Just a few days ago, someone reactivated the post below. I warmly recommend watching the video. Thank you Margaret for founding and shaping our field. www.sussex.ac.uk/broadcast/re...
sussex.ac.uk
Obituary: Professor Maggie Boden
The University of Sussex mourns the loss of Professor Margaret (Maggie) Boden, a pioneering figure in cognitive science and artificial intelligence.
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José A. Alonso @jalonso.eurosky.social · 22/07/2025
"He decidido hacer lo que me gusta porque es bueno para la salud." ~ Voltaire (1694-1778).
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Paul Jessup @pauljessup.com · 15/07/2025
LOL
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Mark A. Hanson @hansonmark.bsky.social · 03/06/2025
URGENT: FlyBase has lost practically all its funding overnight; even user fees are tied up in denied grant funding. 🤬🤯 Any lab using @flybase.bsky.social please donate using the link in post below. This incredible community, on whose backs our #Drosophila labs depend, can't be left out to dry.
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Gonzalo de Polavieja @polavieja.bsky.social · 03/06/2025
It took us many years to improve idtracker.ai in both accuracy and tracking time. Here it is.
idtracker.ai
idtracker.ai — idtrackerai 6.0.3 documentation
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European Commission @ec.europa.eu · 08/05/2025
Choose Science. Choose Europe. A new Marie Skłodowska-Curie Actions Postdoctoral Fellowships 2025 call is now open. With a budget of €404.3 million, it will support around 1,650 researchers from Europe and beyond. Apply by 10 September → europa.eu/!fBTMgF
A graphic for the Marie Skłodowska-Curie Actions (MSCA), showing a historical portrait of Marie Skłodowska-Curie overlaid with an image of four young researchers walking down a hallway. The European Commission logo is in the top left. Text reads: "Marie Skłodowska-Curie Actions – €404.3 million to support postdoctoral researchers”
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Anastasia Gamick @anastasiag.bsky.social · 15/04/2025
We (mostly @adammarblestone.bsky.social and Mary with the help of the amazing scientists in our network) made a map of “fundamental development” gaps in science and technology. Go explore gap-map.org.
gap-map.org
The Gap Map
Explore R&D Gaps and their related Foundational Capabilities.
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José A. Alonso @jalonso.eurosky.social · 19/04/2025
Neural theorem proving tutorial. ~ Sean Welleck. github.com/wellecks/ntp... #MachineLearning #ITP #LeanProver
github.com
GitHub - wellecks/ntptutorial: Tutorial on neural theorem proving
Tutorial on neural theorem proving. Contribute to wellecks/ntptutorial development by creating an account on GitHub.
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Gonzalo de Polavieja @polavieja.bsky.social · 01/04/2025
Had to happen at some point: today, the o1 model solved in one go the PhD thesis of one of the students in the lab. Shall we add the model as a coauthor? Shall I stop having students or shall we work on more complex problems?
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Gonzalo de Polavieja @polavieja.bsky.social · 24/03/2025
Just found this. You pin this post below and you get a feed of only papers from your following. Worth a try.
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Patrick Mineault @patrickmineault.bsky.social · 31/01/2025
A quick-start guide to research non-profits: erikaaldendeb.substack.com/p/erikas-qui...
erikaaldendeb.substack.com
Erika's quick-start guide to research nonprofits
You do NOT need permission from a university to do research (!!)
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Dinu F Albeanu @dinanthos.bsky.social · 14/01/2025
Interested in understanding how things work? In particular the tools you use to study the brain? Join us at TENSS 2025 where we brainstorm ideas, build and debug microscopes, electrophysiology and behavior rigs amidst the picturesque Transylvanian hills! tenss.ro Apply by: February 16th!
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Patrick Mineault @patrickmineault.bsky.social · 01/01/2025
www.neuroai.science/p/foundation...
neuroai.science
Foundation models for neuroscience
Opportunities and pitfalls of large-scale models
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Surya Ganguli @suryaganguli.bsky.social · 31/12/2024
Our new paper! "Analytic theory of creativity in convolutional diffusion models" lead expertly by @masonkamb.bsky.social arxiv.org/abs/2412.20292 Our closed-form theory needs no training, is mechanistically interpretable & accurately predicts diffusion model outputs with high median r^2~0.9
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Gonzalo de Polavieja @polavieja.bsky.social · 30/12/2024
Human Frontier Science Program for small consortia working on interdisciplinary biological problems. Letter of intent by 18th March 2025. www.hfsp.org/funding/hfsp...
hfsp.org
Research Grants | Human Frontier Science Program
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Maarten van Smeden @maartenvsmeden.bsky.social · 23/12/2024
Let us start 2025 in a positive mood: here are 10 methods things researchers can worry *less* about in 2025
media.tenor.com
a countdown clock with the number 10 in the center
ALT: a countdown clock with the number 10 in the center
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International Society for Neuroethology @neuroethology.org · 30/12/2024
Just 1 minute of being "chased" by an object teaches zebrafish day-olds to recognize it as a threat. This rapid learning is powered by noradrenergic and forebrain circuits. www.cell.com/current-biol... @currentbiology.bsky.social
cell.com
Days-old zebrafish rapidly learn to recognize threatening agents through noradrenergic and forebrain circuits
Zocchi et al. utilize a robotic predator-learning assay to show that larval zebrafish as young as 5 days post-fertilization rapidly learn to avoid robots following predatory-like experiences. Whole-brain imaging of neural activity implicates the noradrenergic system and forebrain populations in this “conditioned robot avoidance” learning.
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Gonzalo de Polavieja @polavieja.bsky.social · 25/12/2024
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Gonzalo de Polavieja @polavieja.bsky.social · 25/12/2024
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Gonzalo de Polavieja @polavieja.bsky.social · 22/12/2024
Sign up to come to the Alternative Mathematics for AI Meeting, sites.google.com/view/altai25
sites.google.com
ALTAI25
Join us to explore the mathematical foundations of artificial intelligence
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Gonzalo de Polavieja @polavieja.bsky.social · 20/12/2024
Last day to apply!!!: postdoctoral position available with us and David Rios (www.davidriosinsua.es at ICMAT, bsky.app/profile/icma...) on collective behavior and frontier AI techniques, more info and application: aihub.csic.es/en/allies-co...
davidriosinsua.es
David Ríos Insua
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Gonzalo de Polavieja @polavieja.bsky.social · 19/12/2024
Genesis: high quality generative Physics engine, genesis-embodied-ai.github.io
genesis-embodied-ai.github.io
Genesis
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Gonzalo de Polavieja @polavieja.bsky.social · 19/12/2024
Large concept models is a very interesting idea, ai.meta.com/research/pub...
ai.meta.com
Large Concept Models: Language Modeling in a Sentence Representation Space | Research - AI at Meta
LLMs have revolutionized the field of artificial intelligence and have emerged as the de-facto tool for many tasks. The current established technology of...
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Gonzalo de Polavieja @polavieja.bsky.social · 17/12/2024
Applications still open for the International Neuroscience Doctoral Programme at Champalimaud in Lisbon fchampalimaud.org/champalimaud...
fchampalimaud.org
International Neuroscience Doctoral Programme | Champalimaud FoundationFundação ChampalimaudFundação Champalimaud Logotipo BotãoFundação Champalimaud Logotipo BotãoFundação Champalimaud Logotipo Botão...
The call for the 2025 Champalimaud Foundation's International PhD in Neuroscience will open in the first week of December 2024.
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Ricard Solé @ricardsole.bsky.social · 13/12/2024
How can randomness be a source of living order? Can physics explain how an embryo emerges out of chaos? In this new paper in Science, Bernat Corominas-Murtra, @ehannezo.bsky.social & cols. show how embryos solve their own Rubik’s cube ist.ac.at/en/news/from...
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Michael Fischbach @mfgrp.bsky.social · 11/12/2024
Today we report that an engineered skin bacterium, swabbed gently on the head of a mouse, can unleash a potent antibody response against a pathogen. Could lead to topical vaccines that are applied in a cream. @djenetbousbaine.bsky.social led the charge... @natureportfolio.bsky.social 1/55
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Prof Sarah-Jayne Blakemore @sjblakemore.bsky.social · 12/12/2024
I wrote an article about my dad's death, and how it affected my views on assisted dying Free version of the article in the next post Views are my own, not those of the institutions or academies I'm associated with www.thetimes.com/uk/healthcar...
thetimes.com
What my dad’s death taught me about the assisted dying debate
Sarah-Jayne Blakemore and her sisters knew their father, the neuroscientist Sir Colin Blakemore, had always planned to go to the Netherlands in the face of terminal motor neurone disease. But the real...
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Gonzalo de Polavieja @polavieja.bsky.social · 12/12/2024
Great scientist and great person. Great coffee. I tried to learn all I could from him.
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Ann Kennedy @antihebbiann.bsky.social · 11/12/2024
Interested in diffusion models, behavior forecasting, internal states, neuromechanical modeling, reservoir computing, joint neural/behavioral datasets? Missing the sunshine? We have multiple fully funded postdoc positions, come join us!
The Kennedy lab is recruiting for multiple funded postdoctoral positions in theoretical and computational neuroscience, following our recent lab move to Scripps Research in sunny San Diego, California.
Ongoing projects in the lab span topics in:
-	reservoir computing with heterogeneous cell types
-	reinforcement learning/control theory analysis of complex behavior
-	neuromechanical whole-organism modeling
-	imitation learning/forecasting of mouse social interactions
-	joint analysis/modeling of effects of internal states on neural + vocalization + behavior data
With additional NIH and foundation funding for:
-	characterizing progression of behavioral phenotypes in Parkinson’s
-	modeling cellular/circuit mechanisms underlying internal state-dependent changes in neural population dynamics
-	characterizing neural correlates of social relationships across species
Projects are flexible and can be tailored to applicants’ research and training goals, and there are abundant opportunities for new collaboration with local experimental groups.
San Diego has a fantastic research community and very high quality of life. Our campus is located at the Pacific coast, at the northern edge of UCSD and not far from the Salk Institute. We offer competitive postdoctoral stipends that reflect coastal cost-of-living expectations and include a relocation bonus, with research professorship positions available for qualified applicants.
More information about the lab at https://www.kennedylab.org.
Please email Ann Kennedy akennedy@scripps.edu with inquiries.
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Gonzalo de Polavieja @polavieja.bsky.social · 09/12/2024
Want to do a PhD in Neuroscience? Applications are open until January 31st for the Champalimaud International Neuroscience Doctoral Programme (INDP) in beautiful Lisbon Portugal. fchampalimaud.org/champalimaud...
fchampalimaud.org
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jcrwhittington.bsky.social @jcrwhittington.bsky.social · 08/12/2024
New paper out in #Neuron: A general theory of sequential working memory in prefrontal cortex and RNN/SSMs with their exact neural mechanism. Plus unifying this new mechanism with the alternate mechanism of hippocampal cognitive maps! (1/9) www.cell.com/neuron/fullt...
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Martin Bauer @martinmbauer.bsky.social · 07/12/2024
2. Biology: A not very appetising fact about a 2D world is that a digestive system as we know it in 3D cannot exist. If there were 2D creatures they would need to eat and excrete through the same opening 3/10 (sketch by @joabaldwin.com )
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Ricard Solé @ricardsole.bsky.social · 07/12/2024
How can physics define universal laws for computation, from cells and chips to brains? In this @pnas.org Perspective, led by @sfiscience.bsky.social David Wolpert and Jan Korbel, they suggest how Stochastic Thermodynamics can provide the proper framework pnas.org/doi/epub/10....
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Tim Behrens @behrenstimb.bsky.social · 01/12/2024
OK If we are moving to Bluesky I am rescuing my favourite ever twitter thread (Jan 2019). The renamed: Bluesky-sized history of neuroscience (biased by my interests)
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Tomer Ullman @tomerullman.bsky.social · 01/12/2024
thinking of calling this "The Illusion Illusion" (more examples below)
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