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Dimitra Maoutsa

@dimma.bsky.social
1.5K followers 770 following 31 posts

Theor/Comp Neuroscientist (postdoc) Prev@TU Munich Stoch&nonlin dynamics @TU Berlin&@MPIDS ... Learning dynamics, plasticity&geometry of representations dimitra-maoutsa.github.io dimitra-maoutsa.github.io/M-Dims-Bl…

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Reposted by Dimitra Maoutsa
Dimitra Maoutsa @dimma.bsky.social · 12h
If you are at #BernsteinConference @bernsteinneuro.bsky.social today, come by 𝐩𝐨𝐬𝐭𝐞𝐫 𝐈𝐈𝐈 𝟖𝟗 to listen from @johnmadridcarvajal.bsky.social 𝐡𝐨𝐰 𝐫𝐞𝐰𝐚𝐫𝐝 𝐬𝐡𝐚𝐩𝐞𝐬 𝐧𝐞𝐮𝐫𝐚𝐥 𝐩𝐨𝐩𝐮𝐥𝐚𝐭𝐢𝐨𝐧 𝐝𝐲𝐧𝐚𝐦𝐢𝐜𝐬 in 🐁 visual crtx. Work with 𝗞𝗮𝘁𝗷𝗮 𝗞𝗮𝘂𝗿𝗶𝗻𝗸𝗼𝘀𝗸𝗶, 𝗜𝘀𝗵𝘁 𝗦𝗶𝗻𝗴𝗵, 𝗥𝗼𝗵𝗶𝘁 𝗝𝗲𝘀𝘄𝗮𝗻𝘁𝗵🧠 🔗 abstracts.g-node.org/conference/B...
abstracts.g-node.org
Bernstein Conference 2026
Conference Abstracts
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Dimitra Maoutsa @dimma.bsky.social · 12h
If you are at #BernsteinConference @bernsteinneuro.bsky.social today, come by 𝐩𝐨𝐬𝐭𝐞𝐫 𝐈𝐈𝐈 𝟖𝟗 to listen from @johnmadridcarvajal.bsky.social 𝐡𝐨𝐰 𝐫𝐞𝐰𝐚𝐫𝐝 𝐬𝐡𝐚𝐩𝐞𝐬 𝐧𝐞𝐮𝐫𝐚𝐥 𝐩𝐨𝐩𝐮𝐥𝐚𝐭𝐢𝐨𝐧 𝐝𝐲𝐧𝐚𝐦𝐢𝐜𝐬 in 🐁 visual crtx. Work with 𝗞𝗮𝘁𝗷𝗮 𝗞𝗮𝘂𝗿𝗶𝗻𝗸𝗼𝘀𝗸𝗶, 𝗜𝘀𝗵𝘁 𝗦𝗶𝗻𝗴𝗵, 𝗥𝗼𝗵𝗶𝘁 𝗝𝗲𝘀𝘄𝗮𝗻𝘁𝗵🧠 🔗 abstracts.g-node.org/conference/B...
abstracts.g-node.org
Bernstein Conference 2026
Conference Abstracts
132
Reposted by Dimitra Maoutsa
Matthijs Pals @matthijspals.bsky.social · 28/09/2026
What are the dynamics underlying sequence working memory? To found out, we develop and analyse RNNs fitted to multi-session single-unit data of macaques. See my talk Wed 12:00, at @bernsteinneuro.bsky.social. With @jakhmack.bsky.social @mackelab.bsky.social Data from Chen et al., Neuron 2024.
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John Scalzi @scalzi.com · 26/09/2026
Whatever you do, don't smoke an entire brisket at a job interview, it's a lot of equipment to bring in, it takes a really long time to do it right and those conference rooms have notoriously poor ventilation
Someone smoking a brisket and poking it with a meat thermometer to see what the internal temperature is
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Cell Reports @cp-cellreports.bsky.social · 24/09/2026
Heterogeneous single-cell dynamics support stable population codes for objects in the mouse anterior cingulate cortex
dlvr.it
Heterogeneous single-cell dynamics support stable population codes for objects in the mouse anterior cingulate cortex
How the cortex maintains stable memories despite highly volatile individual cell activity remains a fundamental puzzle. Using long-term imaging in mice, Descamps et al. reveal that the anterior cingulate cortex overcomes single-cell instability through collective network-level organization, creating stable and efficient population codes for spatial objects.
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Dr. Angelica Lim @petitegeek.bsky.social · 24/09/2026
50 commentaries from various groups around the world, excited to dig in www.cambridge.org/core/journal...
cambridge.org
Conscious artificial intelligence and biological naturalism | Behavioral and Brain Sciences | Cambridge Core
Conscious artificial intelligence and biological naturalism - Volume 49
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Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 24/09/2026
“Many of the greatest scientific breakthroughs have emerged from this ability to…challenge prevailing conceptual frameworks…it remains unclear whether [AI systems] can deliberately perform this kind of conceptual reframing.” www.nature.com/articles/s41...
nature.com
Scientific culture in the age of AI - Nature Cell Biology
Recent changes in Genentech’s scientific organization, occurring as the company makes artificial intelligence (AI) increasingly central to its research strategy, highlight a broader question facing bi...
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Rich Pang @rkp-science.bsky.social · 23/09/2026
How many bits of information can different synaptic learning rules store about spike trains? In new work I attempt to calculate this analytically and propose a potential first-principles account of BTSP: journals.aps.org/pre/abstract...
journals.aps.org
Information retention by synaptic learning rules in stochastic spiking neural networks
Physical learning systems require a means to store information about the past. In the brain, information is thought to be stored in synaptic connections between neurons whose weights change in respons...
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megan peters 🧠 @meganakpeters.bsky.social · 23/09/2026
Neuromatch Impact Scholars are smart, dedicated, motivated, and have also gone thru at least one of our courses! Mentoring them can lead to publications and other important outputs! Apply to mentor today -- fantastic opportunity!
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(((Dr Hannah Wirtshafter))) 🔬 @aheadofthenerve.bsky.social · 22/09/2026
new week new boost for myself lol
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johnmadridcarvajal.bsky.social @johnmadridcarvajal.bsky.social · 22/09/2026
Come and catch @dimma.bsky.social and me at the #BernsteinConference @bernsteinneuro.bsky.social Poster Session III to explore our pod’s Impact Scholar’s work. A big thank you to @dimma.bsky.social for supervision and guidance and to @neuromatch.bsky.social for their incredible support! 🙌🏽🧠🐭
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Neuromatch @neuromatch.bsky.social · 22/09/2026
💫 Catch @johnmadridcarvajal.bsky.social with his pod's Impact Scholar's work 'Reward Aligns Dominant Population Modes with Task-Relevant Information' at the #BernsteinConference @bernsteinneuro.bsky.social Poster Session III on Wednesday! Learn more: www.linkedin.com/feed/update/...
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Sean Carroll @seanmcarroll.bsky.social · 21/09/2026
Science will always be a target for movements that rely on constructing their own version of reality.
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PessoaBrain @pessoabrain.bsky.social · 21/09/2026
𝗥𝗲𝗰𝗼𝗿𝗱𝗶𝗻𝗴 𝗮𝗰𝗿𝗼𝘀𝘀 𝗯𝗿𝗮𝗶𝗻 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘀 𝗯𝗿𝗮𝗶𝗻𝘄𝗶𝗱𝗲 𝗿𝗲𝗽𝗿𝗲𝘀𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻𝘀 Neuroscientists now recording across the brain are finding what fMRI revealed in humans. Signals are not localized but often all over the brain. (NB: non, it's not everything, everywhere) #neuroskyence www.biorxiv.org/content/10.6...
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The vOICe vision BCI 🧠🇪🇺 @seeingwithsound.bsky.social · 07/07/2026
How reward and experience shape neural population dynamics in mouse visual cortex zenodo.org/records/2064... by @johnmadridcarvajal.bsky.social @dimma.bsky.social et al.; sensory statistics vs reward-driven; #neuroscience
zenodo.org
How reward and experience shape neural population dynamics in mouse visual cortex
Learning reshapes cortical activity, but it remains unclear whether population-level changes primarily reflect exposure to sensory statistics or reward-driven assignment of behavioral relevance. We an...
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Julie Charlton @juliecharlton.bsky.social · 21/09/2026
I never lose, I either win or I learn. Washington Square Park
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Cooper Lund @cooperlund.online · 19/09/2026
My parents really did nail my birth announcement
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Sarah Andersen @sarahseeandersen.bsky.social · 19/09/2026
The image is of a four panel comic.
The first panel shows a brain. The brain is saying "I'm 30 and YOUNG! I only recently fully developed!"
The second panel shows a heart. The heart says "I hear ya! I can keep going for DECADES more!"
The third panel shows a spine's face. It weakly says, "I am old".
We zoom out and the spine is using a walker. It continues, "so very old".
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Nobel Prize @nobelprize.org · 20/09/2026
"When you fail, be obstinate... never give up." Get some valuable career advice from our 2023 Nobel Prize laureates Katalin Karikó, Claudia Goldin and Anne L'Huillier.
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MeidasTouch @meidastouch.com · 19/09/2026
Watch the full report: youtu.be/mfFgLfcUp2g
youtu.be
Epstein Survivors REACT As Trump’s SECRETS UNRAVEL!!
At the Redacted Reading Room, there is an area carefully and beautifully carved out that holds hundreds of candles, each representing the life of a victim, a survivor. Katie Phang was joined by…
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MeidasTouch @meidastouch.com · 19/09/2026
Epstein survivor Danielle Bensky describes the isolation she experienced and the realization that came from finally seeing the scope of the case: “It’s weirdly vindicating to sit here and see in the files like, ‘Oh no, I’m not crazy. This really happened and it happened to so many people.’”
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The Onion @theonion.com · 18/09/2026
Trans Teen Hatches Nefarious Plot To Undergo Years Of Medical Treatments And Counseling To Win At Swimming theonion.com/trans-teen-hatches-nef…
Trans Teen Hatches Nefarious Plot To Undergo Years Of Medical Treatments And Counseling To Win At Swimming
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Rosanne Rademaker @rademaker.bsky.social · 18/09/2026
Recently I asked PIs to share lab documentation for a meta-science project on lab culture! with @weijima.bsky.social and Chris Pfund. Thanks for sharing these great resources, quite some are now linked from our preprint below! Check it out to read about lab culture, the PI’s role, and documentation
osf.io
OSF
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Rosemary Mosco @rosemarymosco.com · 18/09/2026
Humaning.
A four-panel comic. In panel 1, a Northern Cardinal and American Goldfinch perch above a busy crowd in a city, looking down. The cardinal says "It's a nice day to go humaning." The goldfinch says "Just look at them. Majestic." In panel 2, a close-up of the two birds. The cardinal says "Nobody tells you that you'll reach a certain age and suddenly get into humaning. I hit 3 years old, and then bam."The birds are looking out over the crowd scene. In panel 3, the cardinal says "Their calls sound funny to us, but each one has a unique meaning." Below, people are saying various things: "I'm tired." "Where's my phone?" "I'd murder a burrito." In panel 4, the birds look down excitedly at a man walking by. The cardinal says "Wait, is that a guy who got dressed in the dark and put his shirt on inside out and backwards?" And the goldfinch exclaims, "Holy... that's a lifer!"
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Natalie Schaworonkow @nschawor.bsky.social · 17/09/2026
currently preparing for a Bernstein pre-conference workshop that I co-organized with @neuralnestbird.bsky.social. we will be looking at different electrophysiological signatures (= 〰️〰️〰️) across species. come by and say hi if you are there. 🙂 bernstein-network.de/bernstein-co...
Bernstein Workshop 2026
Bridging the species divide:
 
comparative approaches to study neural signatures
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Hadas Weiss @hadas.bsky.social · 17/09/2026
canadians microdosing eu membership by being less friendly
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dave wagner @davewagner.bsky.social · 17/09/2026
dang, new cat all pissed. this is not the face of an animal who is pleased to have been discovered.
Close-up of a small wild cat with brown striped fur, large rounded ears, amber eyes, and a dark nose, staring directly at the camera with an intense, slightly irritated expression.
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Shantell Powell @shanmonster.bsky.social · 17/09/2026
Newly discovered cuties! gizmodo.com/scientists-d...
gizmodo.com
Scientists Discover First New Cat Species in Over a Century—and It's Love at First Sight
The tiny cats only measure between one and two feet long and weigh between four and six pounds.
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Shicheng Guo @shihcheng.bsky.social · 17/09/2026
Learning reshapes the neural geometry of the primate PFC, evolving from exploring diverse rules to efficiently encoding task-relevant info. PMID:42350815, Nat Neurosci 2026, @NatureNeuro doi.org/10.1038/s41593-026-02333-w #Medsky #Pharmsky #RNA #ASHG #ESHG 🧪
doi.org
Learning shapes neural geometry in the primate prefrontal cortex | Nature Neuroscience
The relationship between the geometry of neural representations and the task being performed is a central question in neuroscience. The primate prefrontal cortex (PFC) is a primary focus of inquiry, as it can encode information with geometries that either rely on past experience or are experience agnostic. One hypothesis is that PFC representations should evolve with learning, from a format that supports exploration of all possible task rules to a format that minimizes the encoding of task-irrelevant features and supports generalization. Here we test this idea by recording neural activity from the macaque PFC when learning a new rule (‘XOR rule’) from scratch. We show that PFC representations progress from being high dimensional, nonlinear and randomly mixed to low dimensional and rule selective. Upon generalizing the rule to new stimuli, these representations further evolve into an abstract, stimulus-invariant geometry. These findings reconcile previously conflicting accounts of PFC f
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Ankita Jha @ankita13jha.bsky.social · 23/08/2026
May be it only works for me but I have been using blebbing cells as calming patterns :)
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Weiji Ma @weijima.bsky.social · 17/09/2026
NEW PREPRINT ON LAB CULTURE: What is it, how is it related to mentorship, and how to document it? With @rademaker.bsky.social and Chris Pfund. osf.io/preprints/ps...
osf.io
OSF
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NBC News @nbcnews.com · 17/09/2026
The new wild cat species is about the size of a domestic kitten and lives in Bolivia.
nbcnews.to
New wild cat species is identified for first time in 100 years, researchers say
A type of tiger cat, the animal is smaller than a house cat, slender and spotted. It lives in the Bolivian cloud forest.
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Sean Carroll @seanmcarroll.bsky.social · 16/09/2026
Not only are wave functions real, but they contain the soul and can be lassoed with rope! Take that, Psi-epistemologists.
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(((Dr Hannah Wirtshafter))) 🔬 @aheadofthenerve.bsky.social · 15/09/2026
Hi friends & colleagues! I’m on the hunt for a tenure-track home! I’m a BRAIN Initiative K99/R00 scholar studying learning & memory at the intersection of experimental neuroscience, theory, & machine learning/AI. I’d love to connect & would appreciate help spreading the word! web.mit.edu/hsw/www/
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Ben Fulcher @bendfulcher.bsky.social · 14/09/2026
Now published in PLoS Computational Biology! A cortical model combining geometric wave propagation with connectome-wired fast-conducting non-local projections (which strongly shape rapid stimulus-evoked responses but contribute little to slower spontaneous fluctuations) doi.org/10.1371/jour...
doi.org
Modeling the influences of non-local connectomic projections on geometrically constrained cortical dynamics
Author summary Despite the complex wiring patterns found in the cortical connectome, many dynamical properties of macroscale cortical activity can be surprisingly well explained by treating the cortex...
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Eliezyer de Oliveira @eliezyer.bsky.social · 14/09/2026
Why put visual information there? Because movement rarely enters that part of neural state space. By constraining movement to a low-dimensional manifold, the circuit effectively creates another coding space where sensory information can be represented with less interference from movement.
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Earl K. Miller @earlkmiller.bsky.social · 14/09/2026
Most cortical neurons exhibit mixed selectivity rather than specializing in a single function. Our limited ability to juggle tasks may therefore reflect interference among overlapping neural representations. www.nature.com/articles/s41... #neuroscience
nature.com
Feature interference underlies a neuronal basis for the behavioral cost of task uncertainty - Nature Neuroscience
Using a combined approach of monkey electrophysiology, artificial neural networks and human psychophysics, Xue et al. show that neuronal interference from irrelevant information underlies behavioral e...
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Eliezyer de Oliveira @eliezyer.bsky.social · 14/09/2026
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...
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Peter Kok @peterkok.bsky.social · 11/09/2026
I'm very excited about this recent study, led by @pieterbarkema.bsky.social. We find that stimulus representations in the deep layers of V1 can be affected by *later* information: postdiction. See Pieter's thread for more information - and of course the preprint! @jhaarsma.bsky.social #neuroskyence
biorxiv.org
The post-hoc montage of perception: deep layers of primary visual cortex encode postdictive percepts
One of the most puzzling aspects of perception is postdiction: later information can change how a previous stimulus is perceived [1,2]. This indicates that perception is not a livestream of the extern...
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adamezracohen.bsky.social @adamezracohen.bsky.social · 10/09/2026
We wrote a tutorial guide on voltage imaging, now out in Neuron: authors.elsevier.com/a/1nlgh3BtfH... Indicators, microscopes, and software have all advanced to the point that it's not so hard -- you can now directly watch the electrical activity of neurons in live animals or in culture.
authors.elsevier.com
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All content on this site: Copyright © 2026 Elsevier B.V., its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For all open access content, the relevant licensing terms apply.
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Ben Hayden @benhayden.bsky.social · 09/09/2026
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...
nature.com
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...
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Ben Hayden @benhayden.bsky.social · 09/09/2026
Our central finding is that these cells have maps for self/other that overlap *partially*, leading to semi-orthogonal subspaces, which is the magical intermediate state that lets you do both generalization and differentiation.
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Ben Hayden @benhayden.bsky.social · 09/09/2026
The solution (as it so often is) is on the manifold. If we can somehow move place cell logic into the population geometry world, we can accomplish great things, like simultaneous generalization and differentiation. www.cell.com/cell/fulltex...
cell.com
The Geometry of Abstraction in the Hippocampus and Prefrontal Cortex
Different types of cognitive, emotional, and behavioral flexibility—generalization in novel situations and the ability to generate many different responses to complex patterns of inputs—place different demands on neural representations. This paper shows how the geometry of neural representations can be critical for elucidating how the brain supports these forms of flexible behavior.
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Ben Hayden @benhayden.bsky.social · 09/09/2026
New paper from the Neurosurgery Research Team at BCM! “Neural geometry in the human hippocampus enables generalization across spatial position and gaze” led by @assiachericoni.bsky.social! 🧵 www.cell.com/neuron/abstr...
cell.com
Neural geometry in the human hippocampus enables generalization across spatial position and gaze
Chericoni et al. show that neurons in the human hippocampus track the positions of multiple agents in a simple pursuit-based video game. They identified place codes for each agent and for gaze. The co...
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Rainer Friedrich @rainerfriedrichlab.bsky.social · 10/09/2026
Just out in Nat Neurosci: disentangling of neural odor manifolds in "olfactory cortex" of adult zebrafish after learning. Great work by Bo, Nesibe et al and wonderful collaboration with @sueyeonchung.bsky.social that fundamentally changed my view of olfactory cortex. www.nature.com/articles/s41...
rdcu.be
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Marlene Cohen @marlenecohen.bsky.social · 10/09/2026
Now out in Nature Neuroscience: fantastic work by @cxue.bsky.social, Sol Markman et al who discovered a neural reason that performance suffers under cognitive load: “Feature interference underlies a neuronal basis for the behavioral cost of task uncertainty”. www.nature.com/articles/s41... 🧪🧵1/
nature.com
Feature interference underlies a neuronal basis for the behavioral cost of task uncertainty - Nature Neuroscience
Using a combined approach of monkey electrophysiology, artificial neural networks and human psychophysics, Xue et al. show that neuronal interference from irrelevant information underlies behavioral e...
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Daniel de Kadt @dandekadt.bsky.social · 10/09/2026
It does not seem right that when Anthropic execs tweet about their research having a 10% chance of killing all humans they get a bumper IPO payout, but when I do the same thing I get a referral to the IRB for "additional training"
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Drew Schreiner @schreinerdrew.bsky.social · 09/09/2026
I’m on the faculty job market this fall! 🐦🧠 I’m an NIH K99/R00 awardee studying how the brain learns complex skills, using birdsong to connect molecules, synapses, circuits, behavior & computation. Know of a search where I might fit? Please send it my way & share!
drewschreiner.github.io
Drew Schreiner, Ph.D. | Neuroscience of Learning
I use birdsong to understand how the brain learns complex skills across molecules, synapses, circuits, behavior, and computation. On the 2026–27 faculty job market.
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The Picower Institute for Learning and Memory at MIT @picowerinstitute.bsky.social · 09/09/2026
Study led by Huidi Li in the lab of @earlkmiller.bsky.social: www.sciencedirect.com/science/arti...
sciencedirect.com
Neural subspace reorganization reflects value-based decision-making
Value-based decision-making requires maintaining and comparing multiple options to guide behavior. While the neural circuits supporting these decision…
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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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