Lorenzo Posani
Coding and decoding brains 👨💻 ⮂ 🧠
Associate Research Scientist, K99/R00 Scholar
@ Center for Theoretical Neuroscience, Columbia
Co-founder @ Cubbit 🐝 ☁️
- Reposted by Lorenzo PosaniSomebody should invent a socioeconomic system which is good at allocating resources
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- Reposted by Lorenzo PosaniPostdoc position in Paris: come help develop new generation human brain computer interfaces ⚡🧠💻 Interested? Contact me if you have experience with machine learning (e.g. simulation-based inference, RL, generative/diffusion models) or dynamical systems. See below for + details and retweet 🙏
- Reposted by Lorenzo PosaniStreet art memorializing Alex Pretti in Seattle. Per r/Seattle, it was painted on a building facing Swedish Hospital in the First Hill neighborhood www.reddit.com/r/nursing/co...
- Reposted by Lorenzo PosaniReminder: All it would take to end the murder of American citizens by an untrained government goon squad is 16 Republicans in Congress voting with Dems to defund ICE (or 23 to impeach and remove Trump — 3 in House & 20 in Senate). That’s it. 23 Americans can vote for the public and end all of this.
- Reposted by Lorenzo PosaniI just thought everyone should see this
- Reposted by Lorenzo PosaniI knew it would take less than a day for a tiktok dj to make something.
- Reposted by Lorenzo PosaniGood things are possible and we don’t have to settle.
- Reposted by Lorenzo PosaniEveryone is hope scrolling now
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- Reposted by Lorenzo PosaniEurope's MSCA postdoctoral fellowships are now attracting many researchers who would have gone to the US. So the payline has dropped below 10% (~1,600 fellowships to 17k applicants). Super tough situation. One more reason to double the next Horizon budget, as proposed by the EU Commission.
- Applications for MCSA are up 64%! 50% now come from outside the EU. Trump effect? The European Research market just got a hell of a lot more crowded. EU should turn on the tap marie-sklodowska-curie-actions.ec.europa.eu/news/msca-po...
- Absolute peak graphical abstract in this Cell paper about reprogramming the leaf-cutter's brains 😂 www.sciencedirect.com/science/arti...
- Reposted by Lorenzo Posani"The myth of meritocracy in science collapses under the financial sacrifices expected at every career stage. From unpaid internships and self-funded conferences to underpaid positions, these hidden costs disproportionately exclude those without generational wealth, compounded by race and gender."
- Reposted by Lorenzo Posani"in 2025 we will have flying cars" 😂😂😂
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- Reposted by Lorenzo Posani🚨 New WP! 📄 "Publish or Procreate: The Effect of Motherhood on Research Performance" (w/ @valentinatartari.bsky.social 👩🔬👨🔬 We investigate how parenthood affects scientific productivity and impact — and find that the impact is far from equal for mothers and fathers.
- I feel you captain
- Reposted by Lorenzo PosaniRoses are red Violets are blue
- Reposted by Lorenzo PosaniNew collaborative ms! We built & trained a neural network that is biophysically realistic, performs multiple economic choice tasks, and provides insights into orbitofrontal cortex. (We = Aldo Battista 😉) www.biorxiv.org/content/10.1...
- Reposted by Lorenzo PosaniNEW 🧵 Is human intelligence starting to decline? Recent results from major international tests show that the average person’s capacity to process information, use reasoning and solve novel problems has been falling since around the mid 2010s What should we make of this? www.ft.com/content/a801...
- Reposted by Lorenzo PosaniNone of us can be sure what will “work.” You try multiple things and find your way in. Read some histories of the Civil Rights Movement by those who participated. They were never “sure” of what would work. Some campaigns fizzled out. But persistence, creativity, determination, and focus were key.
- Reposted by Lorenzo PosaniExcited to announce multiple #PhD & #Postdoc positions opening in my lab over the next three years as part of the #ERC Starting grant DIVERSE! Reposts appreciated 😊 #neuroscience #neuroskyence
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- Reposted by Lorenzo PosaniWe always see that 1) neural responses are very diverse 2) the shattering dimensionality is as high as it can be. Now also in an extensive analysis of the IBL dataset. Wonderful collaboration with @lorenzoposani.com, Shuqi Wang, Samuel Muscinelli, Liam Paninski. Many new analyses in this new version
- Long-overdue thread on our latest work using the IBL data to reveal the shared organizational principles of the neural code in the cortex. A systematic analysis of categoricality 🧱 and dimensionality 📐 of the neural code across 40+ cortical regions. doi.org/10.1101/202... 👇 1/n
- Long-overdue thread on our latest work using the IBL data to reveal the shared organizational principles of the neural code in the cortex. A systematic analysis of categoricality 🧱 and dimensionality 📐 of the neural code across 40+ cortical regions. doi.org/10.1101/202... 👇 1/n
- On a larger scale, the brain is clearly functionally and anatomically organized. However, many studies at single-neuron resolution show a complex and seemingly disorganized code, especially in cognitive areas. How do we reconcile these two seemingly conflicting perspectives? 2/n
- Reposted by Lorenzo PosaniNew preprint: "The geometry of the neural state space of decisions", work by Mauro Monsalve-Mercado, buff.ly/42wVHD5. Surprising results & predictions! (Thread) We analyze neuropixel population recordings in macaque area LIP during a reaction time, random-dot motion 1/
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- Reposted by Lorenzo PosaniCan a headline alone be eligible for a Pulitzer?
- Not long ago Google search seemed one of those eternal things - nothing is going to beat it, too much of a head start on the competition. Turns out it will self destruct into a slop & ads soup
- Reposted by Lorenzo PosaniCheck our latest in which we leverage shape metrics to compare neural geometry across regions, sessions or subjects and how their differences predict behavior. w/ Nejatbakhsh, Duong, @sarah-harvey.bsky.social, Brincat, @siegellab.bsky.social, @earlkmiller.bsky.social & @itsneuronal.bsky.social
- Quantifying Differences in Neural Population Activity With Shape Metrics biorxiv.org/content/10.1101/202…
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- Reposted by Lorenzo PosaniSpecialized neurons are the exception, not the rule, in cortex. The brain is complex, go figure! www.thetransmitter.org/neural-codin... #neuroscience
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- Excited to see @thetransmitter.bsky.social feature our preprint on how the neural code changes across the cortical hierarchy! A multi-region perspective on categorical selectivity 🧱 and geometric dimensionality 📐 Blueprint thread coming soon— after I am done with panettone digestion 🥮!
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- Reposted by Lorenzo Posani"Ants solving a geometric problem and it's amazing." This is a great example of 'emergent phenomenon': - None of the ants understand the problem they're solving. - None of them can see the whole shape. - A series of small decisions or rules add up to something with a new layer of complexity.
- Reposted by Lorenzo PosaniSince this is back… Unfortunately, academic inflation and toxic productivity culture has all but done away with this. The effects of this on science advancement will be seen for generations. Slowing down and thinking deeply is essential to solve complex problems and it’s undervalued at every level
- Reposted by Lorenzo PosaniThere's a movement in neuroscience suggesting we should be pursuing bigger bets with larger teams. I think there's a case for doing a bit of this, but I think it's a bad idea to prioritise it for two reasons, and a good case for saying we should be moving in the exact opposite direction. 🧠🧪
- Reposted by Lorenzo PosaniCreated a starter pack of neuroscience in/from Paris. Let me know if you want to be added (the 'from' can include those not in Paris anymore) or just tap in if you want to know what we're talking about! Regardless, please re-tweet! go.bsky.app/3Zs9w5wat://did:plc:mmqv5bnhnnlbbywvzdsbxkkw/app.bsky.graph.starterpack/3lczwvunk4m2u
- Reposted by Lorenzo PosaniThis is what's so baffling about so many suggestions for AI in the humanities classroom: they mistake the product for the point. Writing outlines and essays is important not because you need to make outlines and essays but because that's how you learn to think with/through complex ideas.
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- Reposted by Lorenzo Posani𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝗻𝗲𝘂𝗿𝗮𝗹 𝗰𝗼𝗱𝗲 𝗼𝗳 𝘀𝘁𝗿𝗲𝘀𝘀 𝘁𝗼 𝗰𝗼𝗻𝘁𝗿𝗼𝗹 𝗮𝗻𝗵𝗲𝗱𝗼𝗻𝗶𝗮 Looks like a very cool paper. #neuroscience doi.org/10.1038/s415...
- Reposted by Lorenzo PosaniHere’s a good example of ChatGPT output that could help students better understand how it works and its limitations. #edusky #eduai
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- Since we are in full migration season from the birdsite, I made this to help ppl from the Zuckerman Institute find each other / anybody interested in this amazing community to single-click follow a bunch of 🧠s working on 🧠s. Dm/comment for additions, I just started with the first few I could findat://did:plc:ocf4aqaai2a2wtlaztl6upmw/app.bsky.graph.starterpack/3lbskuxc2kv2f
- Reposted by Lorenzo PosaniThis list likely reflects mainly my interests and circle, and I’m sure I’ve missed many people, but I gave it a try: (I’ll be slowly editing it until it reaches 150/150) go.bsky.app/7VFUkdn (also, I tried but couldn't remove my profile...)
- Reposted by Lorenzo PosaniTo be fair she does look like a chicken.
- Reposted by Lorenzo PosaniWhen I was 5, I loved science, which I took to be planets and magnets and chemicals and shit. Soon I realized science was a collective human activity, and these were just the objects of its attention. Anyway, whenever I read an OpEd on how science isn't political, I think "Are you 5 years old?"
