Shrey Dixit
@shreydixit.bsky.social
📤 78
📥 168
📝 26
Doctoral Researcher doing NeuroAI at the Max Planck Institute of Human Cognitive and Brain Sciences
pinned post!
🚨Preprint Alert: Who Does What in Deep Learning? Multidimensional Contribution of Neural Units using Game Theory:
arxiv.org/abs/2506.19732
The result of my MSc thesis is out with
@kayson.bsky.social
@fatemehhadaeghi.bsky.social
@patrickmineault.bsky.social
@kordinglab.bsky.social
, Claus C. Hilgetag
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Who Does What in Deep Learning? Multidimensional Game-Theoretic Attribution of Function of Neural Units
Neural networks now generate text, images, and speech with billions of parameters, producing a need to know how each neural unit contributes to these high-dimensional outputs. Existing explainable-AI ...
https://arxiv.org/abs/2506.19732
11 months ago
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Nancy Kanwisher
4 days ago
This is one of the most exciting pieces of science I have had the privilege to be involved in, led by
@rui-xu.bsky.social
, Bob Desimone, and Mark Richardson: the discovery of actual long-range monosynaptic connections in the human brain! For example the FFA connects to the rTPJ, how cool is that?
add a skeleton here at some point
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Kayson Fakhar
6 days ago
🚨 The actual paper is now out on
@cp-trendscognsci.bsky.social
:
www.sciencedirect.com/science/arti...
In this opinion piece,
@duncanastle.bsky.social
and I explore the human brain through the lens of optimality and Pareto-optimality theory.
add a skeleton here at some point
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Konrad Kording
26 days ago
After rereading the cool hidden brain paper (
www.frontiersin.org/journals/sys...
) I decided to make a new version. Code and everything available here:
github.com/koerding/neu...
Most popular: hippocampus. Why are diagonal band, medial geniculate nucleus, and interposed nucleus so unpopular?
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Earl K. Miller
25 days ago
The prefrontal cortex controls memory organization in the hippocampus
www.nature.com/articles/s41...
#neuroscience
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The prefrontal cortex controls memory organization in the hippocampus - Nature Neuroscience
Related memories are sometimes encoded in overlapping neurons. The authors show that the prefrontal cortex controls this type of memory organization in the hippocampus through direct projections to th...
https://www.nature.com/articles/s41593-026-02231-1
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Thanks for the invite! Really looking forward to this
add a skeleton here at some point
about 1 month ago
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Fei Wang
about 2 months ago
1/N: Dear colleagues, I would like to share a new paper on the subiculum, part of my PhD with the Neural Computation Group
@andrejbicanski.bsky.social
@mpicbs.bsky.social
. We present “A theory of subicular function and generalized vector coding” that we call Disco.
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.04.04.716474v1
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Emre Yavuz
3 months ago
My first-author review ‘Determinants of individual navigation ability’ is out in Nature Reviews Psychology, co-authored with the inspiring
@hugospiers.bsky.social
!!!! 🎉🧠 ➡️
rdcu.be/e7KxG
#Neuroscience
#Navigation
@nature.com
@natrevpsychol.nature.com
@sfn.org
@fens.org
@ucl.ac.uk
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Can whole-brain fMRI responses to naturalistic video stimuli be predicted using only transcripts? Last year, I gave a tutorial on exactly that. Since the response was very positive, I’ve now released both the tutorial notebook and the trained models publicly.
3 months ago
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Andrej Bicanski
3 months ago
Now out in Hippocampus. Fei Wang‘s model of Trace Vector Cells and intra-subiculum processing, consistent with know effects in CA1.
onlinelibrary.wiley.com/share/CPZPYM...
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Dynamic Updating of Cognitive Maps via Traces of Experience in the Subiculum
You have to enable JavaScript in your browser's settings in order to use the eReader.
https://onlinelibrary.wiley.com/share/CPZPYMDRFVDEXB7IDR3W?target=10.1002/hipo.70078
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Reminds me of a similar game I played at the Jew museum in Berlin on being a Jew before and during the Holocaust. It's sad going through it but it's also important to understand.
add a skeleton here at some point
3 months ago
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Motahareh
3 months ago
Excited to give a talk at
#Cosyne2026
about my PhD work! We show that RNNs trained on visual search converge on brain-like solutions, producing primate-like behavior and neural representations. Happy to chat if you're at Cosyne! 📅 March 15, 2026 📍 Lisbon, Portugal
www.biorxiv.org/content/10.1...
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https://www.biorxiv.org/content/10.1101/2025.06.06.658387v2
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Benjamin Cowley
3 months ago
DNN models of the brain are getting bigger. Are we replacing one complicated system in vivo with another in silico? In new work, we seek the *smallest* DNN models of visual cortex, balancing prediction with parsimony. It turns out these compact models are surprisingly small!
rdcu.be/e5H8G
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Compact deep neural network models of the visual cortex
Nature - Parsimonious deep neural network models can be used for prediction of visual neuron responses.
https://rdcu.be/e5H8G
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Shrey Dixit
Casper Kerrén
3 months ago
1/9 New paper with
@gonzalezgarcia.bsky.social
and
@lindedomingo.bsky.social
: “Characterising semantic prioritisation in visual working memory.” Core question: when we hold visual info briefly in mind, what gets accessed first: perceptual details or semantic meaning?
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Qiaoli Huang
3 months ago
Our new preprint is out on bioRxiv!
@doellerlab.bsky.social
We show that eye-movement sequences actively organize information by aligning with underlying structure and flexibly adapting to cognitive demands in working memory.
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.02.16.706087v1
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Excited to see what comes out of it. Having worked on a similar problem during the Algonauts Challenge, I was quite surprised by the results in the paper.
add a skeleton here at some point
3 months ago
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Konrad Kording
3 months ago
neuroAI comparisons of ANNs to brains do have a range of problems. Even more than I had realized. And I was worried before:
www.biorxiv.org/content/10.1...
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https://www.biorxiv.org/content/10.1101/2025.03.09.642245v1.abstract
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Doeller Lab
4 months ago
🧠 The Mind Meeting Series is back! Organized by us & Bicanski Lab, featuring leading scientists in cognitive and computational neuroscience. Our first speaker is
@lukaskunz.bsky.social
(University Hospital Bonn). 🗓 February 12 | 3:00 PM 📍 In person (Zoom available) We look forward to seeing you!
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Michel Nivard
4 months ago
Ending up in the space between fields where you have no way of effectively communicating your work has always driven me right back into my discipline…
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PessoaBrain
4 months ago
𝗦𝗰𝗵𝗲𝗺𝗮-𝗯𝗮𝘀𝗲𝗱 𝗮𝗰𝘁𝗶𝘃𝗲 𝗶𝗻𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝗳𝗿𝗼𝗻𝘁𝗮𝗹 𝗰𝗼𝗿𝘁𝗶𝗰𝗮𝗹 𝗰𝗼𝗱𝗶𝗻𝗴 𝗼𝗳 𝗮𝗯𝘀𝘁𝗿𝗮𝗰𝘁 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 Giovanni Pezzulo et al introduce hierarchical model of goal attainment in PFC. Looks very impressive.
#neuroskyence
arxiv.org/abs/2601.189...
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Martin Hebart
about 1 year ago
We make about 3-4 fast eye movements a second, yet our world appears stable. How is this possible? In a preprint led by
@lucakaemmer.bsky.social
we test the intriguing idea that anticipatory signals in the fovea may explain visual stability.
www.biorxiv.org/content/10.1...
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Neuroskeptic
4 months ago
"How much of the brain's learned algorithms depend on the fact it is a brain?"
arxiv.org/abs/2601.02063
The brain is a neural network, but also a biological organ (unlike artificial neural networks). How much does this matter to cognition?
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Tim Behrens
4 months ago
At
@elife.bsky.social
you can now include explainer videos with every figure. Like going to a seminar while you engage with the paper. First example here
elifesciences.org/articles/106...
Click the arrows next to each figure to get a video of
@mathiassablemeyer.bsky.social
explaining it for you!
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Rachel Thomas
4 months ago
Close reading is a technique for careful analysis of a piece of writing, practiced by many ancient cultures, major religions, & academic scholars. The latest fastai course experimented with using AI to go deeper when reading. 1/
www.fast.ai/posts/2026-0...
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How To Use AI for the Ancient Art of Close Reading – fast.ai
Experiments in reading with LLMs
https://www.fast.ai/posts/2026-01-21-reading-LLMs/
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Shrey Dixit
Michael Fox
4 months ago
Are connectome-based network mapping methods and the >200 papers that have used it invalid? New paper out in @NatureNeuro says YES.
nature.com/articles/s41...
I have concerns about this new paper's methods and conclusions, but am biased. What do others think?
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Investigating the methodological foundation of lesion network mapping - Nature Neuroscience
The lesion network mapping method links diverse brain lesions to similar functional brain networks, reflecting general brain organization rather than disorder-specific circuits.
https://nature.com/articles/s41593-025-02196-7
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Shrey Dixit
Iris Groen
4 months ago
I have a PhD opening for my
#VIDI
BrainShorts project 📽️🧠🤖! Are you or do you know an ambitious, recent (or almost) MSc graduate with a background in NeuroAI and interest in large-scale data collection and video perception? Check out our vacancy! (deadline Feb 15).
werkenbij.uva.nl/en/vacancies...
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Vacancy — PhD Position in NeuroAI for Video Perception in the Human Brain
<p><span>Are you interested in using AI to unravel the mysteries of the brain? Do you want to perform cutting-edge NeuroAI research and leverage deep learning to understand human vision? Then check out the vacancy below and apply for a PhD position in this exciting research direction.</span></p>
https://werkenbij.uva.nl/en/vacancies/phd-position-in-neuroai-for-video-perception-in-the-human-brain-netherlands-14723
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Qiaoli Huang
4 months ago
Our new paper, now published in Cell Reports, asks how the brain adaptively shapes its representations according to the statistical structure of the environment to overcome the limits of working memory capacity.
www.cell.com/cell-reports...
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Efficient coding in working memory is adapted to the structure of the environment
Huang et al. show that the brain optimizes working memory by compressing information when environmental regularities exist. MEG reveals distinct neural systems for abstract structure and item details,...
https://www.cell.com/cell-reports/fulltext/S2211-1247%2825%2901633-X
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Shrey Dixit
Anna Schapiro
4 months ago
Really thrilled that this paper led by
@neurozz.bsky.social
is now published in its final version in
@elife.bsky.social
!! This is a memory-focused (as opposed to RL-focused) account of the detailed characteristics of forward and backward awake and sleep replay!
elifesciences.org/articles/99931
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A unifying account of replay as context-driven memory reactivation
A context-driven memory model simulates a wide range of characteristics of waking and sleeping hippocampal replay, providing a new account of how and why replay occurs.
https://elifesciences.org/articles/99931
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Konrad Kording
4 months ago
Another cool paper from Iran:
nature.com/articles/s41...
Prenatal stress makes mouse offspring more anxious, hyperactive, forgetful, and more drawn to morphine while laterodorsal tegmentum cholinergic neurons become hyperexcitable. From Kerman, a city with reported violent crackdowns on protests.
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The hyperexcitability of laterodorsal tegmentum cholinergic neurons accompanies adverse behavioral and cognitive outcomes of prenatal stress - Scientific Reports
Scientific Reports - The hyperexcitability of laterodorsal tegmentum cholinergic neurons accompanies adverse behavioral and cognitive outcomes of prenatal stress
https://nature.com/articles/s41598-023-33016-2
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Shrey Dixit
Jens E. Pedersen
4 months ago
The field of
#neuromorphics
is lacking *accessible*, *intuitive*, and *practical* introductions. Ramashish Gaurav, Petruț Antoniu Bogdan, and I are setting out to fix this with a book on Practical Spiking Neural Networks! ✅ Any and all contributions are welcome! 💕 Early access at:
snnbook.net
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Shrey Dixit
Alessandro Gifford
6 months ago
We’d love your feedback on BERG (
github.com/gifale95/BERG
): pretrained encoding models + a Python toolkit for generating in silico neural responses for in silico experimentation. Your input will make BERG more useful and reliable!
forms.gle/pybrqcaqdso2...
#NeuroAI
#CompNeuro
#neuroscience
#AI
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The Brain Encoding Response Generator (BERG) survey
Thank you for taking part in this survey aimed at (anonymously) collecting your thoughts and suggestions on a new resource called the Brain Encoding Response Generator (BERG; https://github.com/gifale...
https://forms.gle/pybrqcaqdso2LJK88
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Mackenzie Weygandt Mathis
5 months ago
Interested in the latest advances in neuroscience (neural dynamics and internal models) and how they can be leveraged to build smarter, adaptive AI? ➡️ My first real solo piece 🖤🫶
@natneuro.nature.com
rdcu.be/eWVmA
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Leveraging insights from neuroscience to build adaptive artificial intelligence
Nature Neuroscience - Adaptive intelligence envisions AI that, like animals, learns online, generalizes and adapts quickly. This Perspective reviews biological foundations, progress in AI and...
https://rdcu.be/eWVmA
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Sakana AI
4 months ago
Introducing DroPE: Extending Context by Dropping Positional Embeddings We found embeddings like RoPE aid training but bottleneck long-sequence generalization. Our solution’s simple: treat them as a temporary training scaffold, not a permanent necessity.
arxiv.org/abs/2512.12167
pub.sakana.ai/DroPE
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Tatjana Tchumatchenko
4 months ago
Please spread the word🔊My lab is looking to hire two international postdocs. If you want to do comp neuro, combine machine learning and awesome math to understand neural circuit activity, then come work with us! Bonn is such a cool place for neuroscience now, you don't want to miss out.
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Sam Gershman
5 months ago
With some trepidation, I'm putting this out into the world:
gershmanlab.com/textbook.html
It's a textbook called Computational Foundations of Cognitive Neuroscience, which I wrote for my class. My hope is that this will be a living document, continuously improved as I get feedback.
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Casper Kerrén
5 months ago
New preprint: Inference over hidden contexts shapes the geometry of conceptual knowledge for flexible behaviour. In this pre-reg study, our core claim was that we don’t just learn stimulus-reward. We infer hidden context and that inference re-wires attention and neural state space on the fly. 1/8
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Dan Goodman
5 months ago
I'm increasingly of the opinion that we shouldn't give credence to any published result unless it has been subject to a good faith attempt to explain the results by a null model, ideally by an independent group that doesn't believe the result is true, and shown to be robust.
add a skeleton here at some point
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Alexander Huth
5 months ago
This paper had a pretty shocking headline result (40% of voxels!), so I dug into it, and I think it is wrong. Essentially: they compare two noisy measures and find that about 40% of voxels have different sign between the two. I think this is just noise!
add a skeleton here at some point
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Armin Lak
5 months ago
New preprint. We show that in addition to reward prediction errors (RPEs), dorsal striatal dopamine signals encode sensory prediction errors (SPEs), the difference between sensory prior & observed stimulus.
www.biorxiv.org/content/10.6...
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Dorsal striatal dopamine integrates sensory and reward prediction errors to guide perceptual decisions
Perceptual decisions are shaped by expectations about sensory stimuli and rewards, learned through sensory and reward prediction errors. Dopamine is known to convey reward prediction errors that shape...
https://www.biorxiv.org/content/10.64898/2026.01.01.696999v1
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Michael Wagner
5 months ago
🚨 Postdoctoral Opportunity for Female Scientists🚨 The University of Vienna is awarding at least 20 fully funded 4 year postdoctoral positions to outstanding female scientists Interested? Get in touch via direct message
careers.univie.ac.at/en/postdoc/e...
#MicroSky
🧪
#PostDoc
@univie.ac.at
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Mari Sosa
5 months ago
Awesome article on medical breakthroughs that came from basic neuroscience research in rodents. Major success examples in postpartum depression, non-opioid pain and migraine treatment. This is exactly why funding basic science is so important!
www.thetransmitter.org/drug-develop...
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How basic neuroscience has paved the path to new drugs
A growing list of medications—such as zuranolone for postpartum depression, suzetrigine for pain, and the gepants class of migraine medicines—exist because of insights from basic research.
https://www.thetransmitter.org/drug-development/how-basic-neuroscience-has-paved-the-path-to-new-drugs/
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Gaute Einevoll
5 months ago
It is not often I get an epiphany from our own research. But this year Torbjørn Ness, Christof Koch, and I realized that when we know how to compute electric brain signals generated by a neuron, we also know how to electrically stimulate the same neuron.
journals.plos.org/ploscompbiol...
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Predicting neural responses to intra- and extra-cranial electric brain stimulation by means of the reciprocity theorem
Author summary Electric brain stimulation is widely used in neuroscience and medicine, from mapping brain function during surgery to treating disorders such as Parkinson’s disease and depression. Yet ...
https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1013782
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The Transmitter
5 months ago
Amid the rise of billion-parameter models, I argue that toy models, with just a few neurons, remain essential—and may be all neuroscience needs, writes
@marcusghosh.bsky.social
.
#neuroskyence
www.thetransmitter.org/theoretical-...
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Not playing around: Why neuroscience needs toy models
Amid the rise of billion-parameter models, I argue that toy models, with just a few neurons, remain essential—and may be all neuroscience needs.
https://www.thetransmitter.org/theoretical-neuroscience/not-playing-around-why-neuroscience-needs-toy-models/?utm_source=bluesky&utm_medium=org-social&utm_campaign=20251222-perspectives-why-neuroscience-needs-toy-models
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Kayson Fakhar
5 months ago
🚨new work with the dream team
@danakarca.bsky.social
@loopyluppi.bsky.social
@fatemehhadaeghi.bsky.social
@stuartoldham.bsky.social
@duncanastle.bsky.social
We use game theory and show the brain is not optimally wired for communication and there’s more to its story:
www.biorxiv.org/content/10.6...
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Nicholas Menghi
6 months ago
Our new paper, now published in
@natcomms.nature.com
, asks a simple question: when two tasks share a common structure, does the brain learn them more efficiently? Surprisingly, this was not the case. Thread below (1/7)
rdcu.be/eSwvU
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The effects of task similarity during representation learning in brains and neural networks
Nature Communications - Here, the authors show learning tasks with similar structures can initially cause interference and slow down learning, but both the brain and artificial networks gradually...
https://rdcu.be/eSwvU
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Janis Keck
6 months ago
New preprint! Have you ever wondered, what are these fuzzy simplicial sets, the theoretical framework behind e.g. UMAP? Here we show that you may simply see them as marginal distributions over simplicial sets. This provides a generative model for UMAP. (1/2)
arxiv.org/abs/2512.03899
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Probabilistic Foundations of Fuzzy Simplicial Sets for Nonlinear Dimensionality Reduction
Fuzzy simplicial sets have become an object of interest in dimensionality reduction and manifold learning, most prominently through their role in UMAP. However, their definition through tools from alg...
https://arxiv.org/abs/2512.03899
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Martin Hebart
7 months ago
Please repost! I am looking for a PhD candidate in the area of Computational Cognitive Neuroscience to start in early 2026. The position is funded as part of the Excellence Cluster "The Adaptive Mind" at
@jlugiessen.bsky.social
. Please apply here until Nov 25:
www.uni-giessen.de/de/ueber-uns...
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Luise Graichen
7 months ago
✨My first first-author paper is out✨ Entorhinal grid-like codes for visual space during memory formation in
@natcomms.nature.com
➡️
rdcu.be/eLRm2
Big thanks to everyone @isabellacwagner.bsky.social,
@tobiasstaudigl.bsky.social
,
@olejensen.bsky.social
,
@doellerlab.bsky.social
,
@clauslamm.bsky.social
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Entorhinal grid-like codes for visual space during memory formation
Nature Communications - Eye movements during scene viewing are tied to grid-like codes in the entorhinal cortex. Grid signals are specific to later remembered scenes, covary with activity in...
https://rdcu.be/eLRm2
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Michael Saxon
7 months ago
The viral "Definition of AGI" paper tells you to read fake references which do not exist! Proof: different articles present at the specified journal/volume/page number, and their titles exist nowhere on any searchable repository. Take this as a warning to not use LMs to generate your references!
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Andrej Bicanski
8 months ago
New preprint from the lab and great work by Fei Wang. We show how subiculum trace vector cells can be modeled consistent with known effects in CA1. Traces are driven by a mismatch learning rule to keep associative memories in line with experience.
www.biorxiv.org/content/10.1...
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Dynamic updating of cognitive maps via traces of experience in the subiculum
In the classical view of hippocampal function, the subiculum is assigned the role as the output layer. In spatial paradigms, some subiculum neurons manifest as so-called boundary vector cells (BVCs), ...
https://www.biorxiv.org/content/10.1101/2025.10.01.679719v1
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Qiaoli Huang
9 months ago
Happy to share our new preprint. We found that brain adaptively switches between relational and item-based coding strategies based on the structure of memory contents.
@doellerlab.bsky.social
www.biorxiv.org/content/10.1...
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Efficient coding in working memory is adapted to the structure of the environment
Working memory (WM) relies on efficient coding strategies to overcome its limited capacity, yet how the brain adaptively organizes WM representations to maximize coding efficiency based on environment...
https://www.biorxiv.org/content/10.1101/2025.08.20.671058v1
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