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Giacomo Aldegheri

@gialdegheri.bsky.social
410 followers 491 following 88 posts

Cognitive scientist, postdoc at Justus Liebig University, Giessen. Natural/artificial vision/cognition.

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Reposted by Giacomo Aldegheri
Emily A-Izzeddin @emilya-izzeddin.bsky.social · 23/08/2026
The whole Fleming lab is stoked to be here at #ECVP2026 in Bournemouth - come say hi and check out everyone's awesome presentations if you're interested!
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Ben Beilharz @engramm.ing · 03/08/2026
Happy to announce that MRD got accepted by the Journal of Vision (marks the first submission of my phd). Thanks to all editors and reviewers making the paper better over time. If you don't want to wait for the official JoV version, I updated the preprint & repo with the latest code and results.
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Lu-Chun Yeh @luchunyeh.bsky.social · 05/08/2026
🚨Out now in J Neurosci! 🧠 Using fMRI and EEG, we mapped where and when contextual knowledge of real-world objects emerges within the visual system - even when those objects are viewed in isolation. @dkaiserlab.bsky.social @peelen.bsky.social www.jneurosci.org/content/46/1...
jneurosci.org
Spatiotemporal Representations of Contextual Associations for Real-World Objects
In the real world, objects always appear in context. Many objects are reliably associated with a certain scene context (e.g., pots appear in kitchens) and other objects that appear in the same context...
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Ingmar de Vries @ingmardevries.bsky.social · 03/08/2026
🔭JOB ALERT🔬 Fully-funded PhD (+ soon postdoc) openings in my lab @cimecunitrento.bsky.social in Italy, as part of an Italian FIS3 starting grant. TOPIC: Investigating predictive neural representations in naturalistic settings using MEG-based dynamic RSA
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Tim Kietzmann @timkietzmann.bsky.social · 05/08/2026
Happy to be serving as editor for MMB. Excited about what is to come.
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Perception / i-Perception @pec-ipe.bsky.social · 15/07/2026
👀 Can a visual effect make something feel sticky? 🖐️ As participants pulled their fingers apart, a deforming region stretched before breaking. 📈 The farther it stretched, the stickier it was perceived to be—even without any physical resistance. Full paper doi.org/10.1177/2041...
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Victoria Bosch @initself.bsky.social · 15/07/2026
Excited to share that our paper has been accepted for a talk at #CogSci2026: Path Integration and Object-Location Binding Emerge in an Action-Conditioned Predictive Sequence Network Linda Ariel Ventura, Victoria Bosch, Tim C. Kietzmann, and Sushrut Thorat. Preprint: arxiv.org/abs/2602.03490. ⛓️
arxiv.org
Path Integration and Object-Location Binding Emerge in an Action-Conditioned Predictive Sequence Network
Adaptive cognition requires structured internal models of objects and their relations. Predictive neural networks are often proposed to learn such world models, but how these are instantiated and how ...
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Mark Ho @markkho.bsky.social · 17/06/2026
How do human minds make sense of big, messy problems? 😵‍💫🌀 How do we distill complexity into something simple enough to solve? 🤔💡 We’ll be tackling these questions (and more!) at two workshops on task representations, abstractions, and construals #CogSci2026 #CCN2026 🧵 framing-the-problem.github.io
framing-the-problem.github.io
Framing the Problem — Workshop Series
A workshop series on representation construction in cognitive science and AI. CogSci 2026 (Rio) and CCN 2026 (NYU).
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Trends in Cognitive Sciences @cp-trendscognsci.bsky.social · 15/06/2026
Online planning of sequential actions Review by Jörn Diedrichsen (@diedrichsenjorn.bsky.social), Mehrdad Kashefi (@mkashefi.bsky.social), Amin Nazerzadeh, & J. Andrew Pruszynski (@andpru.bsky.social) tinyurl.com/2p9nbnbx
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Matthias Nau @matthiasnau.bsky.social · 15/06/2026
The massive 7T-fMRI Natural Scenes Dataset (NSD) has been extended to Neuropixels recordings in macaques! Exciting resource for inter-species comparisons by Li et al. @natneuro.nature.com. www.nature.com/articles/s41... Also nice News & Views by Kay and colleagues! www.nature.com/articles/s41...
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Doeller Lab @doellerlab.bsky.social · 04/06/2026
Join us at the Max Planck Institute in Leipzig as a fully funded 4-year postdoc position (m/f/d) in Cognitive and Computational Neuroscience (Area: Social Cognition). Excellent infrastructure with a leading scientific network. Apply by 13 July: recruitingapp-5218.de.umantis.com/Vacancies/44...?
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Linnéa Gyllingberg @gyllingberg.bsky.social · 19/05/2026
What is the minimal machinery needed for complex, cognition-like behavior? With @lostintheswarm.bsky.social, we show how self-sustained calcium oscillations, diffusion, and mechanics may be enough to coordinate behavior across a single cell with no nervous system. www.biorxiv.org/content/10.6... 1/
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Philip Sulewski @psulewski.bsky.social · 26/05/2026
Now out in Nature Neuroscience: "Fixation duration on natural scenes is explained by memory encoding not processing demand". www.nature.com/articles/s41... Our eyes don't linger because recognition is hard; they linger to remember. Let me take you on a quick tour. 🧵
nature.com
Fixation duration on natural scenes is explained by memory encoding not processing demand - Nature Neuroscience
By combining magnetoencephalography and eye tracking, this study sheds light on why people fixate on some parts of natural scenes longer than others. Rather than visual complexity, fixation durations ...
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Giacomo Aldegheri @gialdegheri.bsky.social · 19/05/2026
Folks at #VSS2026, stop by my poster this morning to hear about my work with Roland Fleming on these little guys and their navigational affordances! "Automatically perceiving paths through a scene", poster 53.348, Banyan Breezeway 8.30-12.30
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Maëlle Lerebourg @maellelerebourg.bsky.social · 04/05/2026
What do we look for when searching for objects in our daily-life environments? Very happy that I can now share this review, together with @suryagayet.bsky.social , @predictivebrain.bsky.social and @peelen.bsky.social🥳 A brief thread below!
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Giacomo Aldegheri @gialdegheri.bsky.social · 24/04/2026
Fantastic work by my labmates, asking people to draw non-existing objects to reveal the structure of our internal category representations!
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Nika Adamian @nikaadamian.bsky.social · 21/04/2026
Tenure-track position in Denmark "with a particular focus on visual perception, including visual attention, working memory, and visual neuroscience" #neurojobs #neuroskyence #visionscience fa-eosd-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/Candid...
fa-eosd-saasfaprod1.fa.ocs.oraclecloud.com
Tenure Track Assistant Professor in Cognitive Psychology
The Department of Psychology at the University of Southern Denmark invites applications for a full-time position as tenure-track Assistant Professor. The position is a six-year tenure-track appointmen...
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Jack Gallant @gallantlab.org · 31/03/2026
Our postdoc Dr. Tianjiao Zhang has released "Its Complicated", a great software library that provides infrastructure to implement naturalistic, complex, interactive experiments in game engines. The toolbox supports peripherals and coding game logic for later analysis. gallantlab.org/Its-Complica...
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PessoaBrain @pessoabrain.bsky.social · 30/03/2026
𝗥𝗲𝗽𝗿𝗲𝘀𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻𝘀 𝗶𝗻 𝗺𝗮𝗰𝗵𝗶𝗻𝗲 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗮𝗻𝗱 𝗯𝗿𝗮𝗶𝗻𝘀 Great paper discussing the challenges of understanding brain representations and the models-brain correspondence #neuroskyence t.co/9l1VU6Pox1
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Kevin Mitchell @wiringthebrain.bsky.social · 27/03/2026
Statistics of natural scenes shape contextual modulation in the visual cortex www.cell.com/neuron/fullt... - would be really interesting to do this right after eye opening!
cell.com
Statistics of natural scenes shape contextual modulation in the visual cortex
How does visual context shape neuronal responses to local features? Fu et al. demonstrate that surround modulation in primary visual cortex neurons reflects how well context matches the optimal local ...
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Constantin Rothkopf @c-rothkopf.bsky.social · 21/03/2026
How do humans adapt their behavior in natural, uncertain environments? Open PhD position in the collaborative DFG Excellence Cluster “The Adaptive Mind” (theadaptivemind-excellencecluster.de) Apply: www.career.tu-darmstadt.de/tu-darmstadt...
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Roy Eyono @royeyono.bsky.social · 19/03/2026
How do neural circuits in the brain implement normalization? 🧠 In our new paper, we show that just normalizing sensory input isn't enough. Crucially, we must also normalize the error signals! 🧵👇 Paper: arxiv.org/abs/2603.17676
arxiv.org
Inhibitory normalization of error signals improves learning in neural circuits
Normalization is a critical operation in neural circuits. In the brain, there is evidence that normalization is implemented via inhibitory interneurons and allows neural populations to adjust to chang...
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Juan Linde-Domingo @lindedomingo.bsky.social · 18/03/2026
New paper! 🚨 ~1.8K Mooney images from THINGS + ~1K participants to study visual ambiguity resolution. Results suggest the visual system shifts from a top-down guess to bottom-up matching after disambiguation, and a U-shaped link between info gain and identification. www.nature.com/articles/s44...
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Steven Scholte @neurosteven.bsky.social · 16/03/2026
We believe visual neuroscience is undergoing a paradigm shift — and the Beyond Binding exchange in @TrendsCogSci makes it visible. Five papers, excellent critics, and a discussion that sharpened and nuanced our argument. Thread 👇
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Pascal Mamassian @mamassian.bsky.social · 16/03/2026
Congratulations to Ian Thornton and colleagues who published their Mainz-Linez illusion in i-Perception (@pec-ipe.bsky.social): the red dots appears to wave left and right when one looks at one of the black dots, but they actually move straight journals.sagepub.com/doi/10.1177/...
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Ben Beilharz @engramm.ing · 16/03/2026
Found something potentially useful for the neural graphics folks: arxiv.org/abs/2603.08824 TL;DR: Package finds soft surrogates for otherwise non-differentiable functions. Has an implementation for Torch: github.com/a-paulus/sof... & Jax: github.com/a-paulus/sof...
arxiv.org
SoftJAX & SoftTorch: Empowering Automatic Differentiation Libraries with Informative Gradients
Automatic differentiation (AD) frameworks such as JAX and PyTorch have enabled gradient-based optimization for a wide range of scientific fields. Yet, many "hard" primitives in these libraries such as...
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Sam Gershman @gershbrain.bsky.social · 14/03/2026
I think Fodor & Pylyshyn's 1988 paper is possibly the most mischaracterized paper in the history of cognitive science. It's often cited as arguing that neural networks cannot achieve systematicity, compositionality, and productivity. But that's not what they actually argue...
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Tomer Ullman @tomerullman.bsky.social · 13/03/2026
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Will Harrison @willjharrison.bsky.social · 09/03/2026
I'm looking for a skilled PhD student who doesn't want to work too hard but still do great science: unisc-cp.enquire.cloud/round/RND-00...
Screenshot of job ad:
How do Bayesian brains acquire priors?
APPLICATIONS CLOSE
20/4/2026 11:55 PM


Summary of the Project
This project explores how the brain constructs perceptual experience from visual input, focusing on the role of Bayesian models in perception. A key challenge in vision science is understanding how humans interpret complex scenes from the limited information available in retinal images. Modern theories suggest that perception involves probabilistic inference, where the brain integrates sensory signals with prior expectations to make sense of the world. However, the origins and nature of these expectations remain poorly understood. This research aims to advance our understanding of perceptual experience by examining how structured patterns in visual input can inform models of perception. The work spans computational modelling and experimental approaches to uncover principles that explain how visual systems interpret properties such as shape, material, and lighting from images. By addressing fundamental questions about perception, this project will contribute to psychology, neuroscience, and artificial intelligence, offering insights into how biological and artificial systems can learn to interpret complex environments.
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Motahareh @motaharehpr.bsky.social · 06/03/2026
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...
biorxiv.org
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Jack Gallant @gallantlab.org · 23/02/2026
We've posted a new fMRI study of semantic relations (has-part, is-a, made-of, etc.), a key aspect of language. We find that relations are represented in the same brain regions as are other semantic concepts, though voxels tend to be selective for only one relation or another. doi.org/10.64898/202...
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Pascal Mamassian @mamassian.bsky.social · 12/03/2026
A new Department of Cognitive Science is being created at Bocconi University in Milan, Italy. Here is the call for a cluster hire (for around 10 faculty) in all areas of cognitive science, at both junior and senior levels: www.unibocconi.it/en/faculty-a... Deadline: May 4th, 2026
unibocconi.it
Open Rank Faculty Cluster Hire Search for the New Department of Cognitive Science at Bocconi - Bocconi University
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micha heilbron @mheilbron.bsky.social · 05/03/2026
📢 PhD position in the NeuroAI of Language Why can LLMs predict brain activity so well? We're hiring a PhD student to find out -- AI interpretability meets neuroimaging Deadline March 20 Please RT 🙏 👇 mpi.nl/career-education/vacancies/vacancy/fully-funded-4-year-phd-position-neuroai-language
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Andrey Chetverikov @achetverikov.bsky.social · 04/03/2026
Recently, van der Stigchel and colleagues posted a provocative commentary suggesting that we should be wary of bots in online behavioral data collection (🧵by @cstrauch.bsky.social here: bsky.app/profile/cstr...). But should we? Here is my response letter osf.io/preprints/ps.... 1/5
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Ida Momennejad @neuroai.bsky.social · 17/02/2026
On the invitation for a commentary on Mazviita Chirimuuta's The Brain Abstracted, I had the pleasure of writing on equating the brain with computation. The Ontological Reversal of Computation and the Brain in Philosophy & the Mind Sciences. Below see what I agree & disagree with in the book. 🧵 1/n
philarchive.org
Ida Momennejad, The Ontological Reversal of Computation and the Brain - PhilArchive
The Brain Abstracted (2025) critiques treating abstractions in neuroscience as complete explanations of the brain, for their oversimplification and control-orientation. Chirimuuta argues that neurosci...
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Anna Shafer-Skelton @ashaferskelton.bsky.social · 17/02/2026
Excited that this work with @serences.bsky.social and @timbrady.bsky.social is now out! Our Gabor-wavelet model better predicted voxel responses in scene regions than 3D models. Does this mean that scene areas aren’t “for” processing 3D scene structure? NO, we argue. 1/ dx.plos.org/10.1371/jour...
dx.plos.org
A 2D Gabor-wavelet baseline model out-performs a 3D surface model in scene-responsive cortex
Author summary To gain a more complete picture of human visual processing, it is critical to understand the precise format of representations of naturalistic visual scenes. Recent work has approached ...
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Kaiser Lab @dkaiserlab.bsky.social · 26/02/2026
10 PhD positions at JLU Giessen in the new Research Training Group "PIMON"! We will explore how humans perceive and interact with materials and objects in natural environments. More information on the project, the PIs, and how to apply here: www.uni-giessen.de/de/ueber-uns... Please share!
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Dominik Straub @dominikstrb.bsky.social · 24/02/2026
Even if bots may not have been a problem in online behavioural datasets 2-3 years ago, we should still be careful about generalizing between online studies and lab studies. See our study on dataset bias: www.nature.com/articles/s41...
nature.com
Modelling dataset bias in machine-learned theories of economic decision-making - Nature Human Behaviour
Thomas et al. examine how dataset effects may limit the generalizability of machine learning-based models of human choice.
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Jennifer Hu @jennhu.bsky.social · 12/02/2026
I wrote a short article on AI Model Evaluation for the Open Encyclopedia of Cognitive Science 📕👇 Hope this is helpful for anyone who wants a super broad, beginner-friendly intro to the topic! Thanks @mcxfrank.bsky.social and @asifamajid.bsky.social for this amazing initiative!
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SueYeon Chung @sueyeonchung.bsky.social · 10/02/2026
Our paper is out in @natneuro.nature.com! www.nature.com/articles/s41... We develop a geometric theory of how neural populations support generalization across many tasks. @zuckermanbrain.bsky.social @flatironinstitute.org @kempnerinstitute.bsky.social 1/14
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Ben Beilharz @engramm.ing · 10/02/2026
Happy to announce that I will be giving a remote talk @vssmtg.bsky.social this year. I will be presenting our recent pre-print MRD: Metamers rendered differentiably (arxiv.org/abs/2512.12307). Happy to take questions before the presentation in May, or live during the online Q&A. #VSS2026 #VSS26
arxiv.org
MRD: Using Physically Based Differentiable Rendering to Probe Vision Models for 3D Scene Understanding
While deep learning methods have achieved impressive success in many vision benchmarks, it remains difficult to understand and explain the representations and decisions of these models. Though vision ...
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Bianca R. Baltaretu, PhD @bbaltaretu.bsky.social · 09/02/2026
Check out our latest preprint: In naturalistic (virtual) scenes, we tested how spatial (proximity to anchor) and cognitive (scene semantics) factors influence allocentric representations of local target objects in a memory-guided placement task: 👇 osf.io/preprints/ps...
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Kaiser Lab @dkaiserlab.bsky.social · 10/02/2026
📢 Workshop announcement. We are super excited to announce the workshop Perceptual Inferences, from philosophy to neuroscience, organized by Alexander Schütz and Daniel Kaiser. 📍 Rauischholzhausen Castle, near Marburg, Germany 🗓️ June 8 to 10, 2026. 1/4
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Mike Frank @mcxfrank.bsky.social · 10/02/2026
Preparing for class and remembering how brilliant this essay is: persci.mit.edu/pub_pdfs/sha... - "The perception of shading and reflectance" (Adelson & Pentland, 1996). Early and beautiful description of Bayesian perception theories.
Figure 11, original image decomposed into shape, light source, shading, and reflectance.
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Lu-Chun Yeh @luchunyeh.bsky.social · 09/02/2026
Check out our new preprint! 🎉 We demonstrate that real-world object search is shaped by both objects’ inherent variability and searchers’ individual priors, using a new approach that combines human drawings with DNN representational similarity analysis. ✍️🖥️👀
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Yong Hoon Chung @yonghoonchung.bsky.social · 09/02/2026
New preprint with @SamJung @timbrady.bsky.social and @violastoermer.bsky.social: osf.io/preprints/ps.... Here we uncover what might be driving the “meaningfulness benefit” in visual working memory. Studies show that real objects are remembered better in VWM tasks than abstract stimuli. But why? 1/
osf.io
OSF
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Kate Storrs @katestorrs.bsky.social · 09/02/2026
Our latest paper, “Visual language models show widespread visual deficits on neuropsychological tests”, is now out in Nature Machine Intelligence: www.nature.com/articles/s42... Non-paywalled version: arxiv.org/abs/2504.10786 Tweet thread below from first author @genetang.bsky.social...
nature.com
Visual language models show widespread visual deficits on neuropsychological tests - Nature Machine Intelligence
Tangtartharakul and Storrs use standardized neuropsychological tests to compare human visual abilities with those of visual language models (VLMs). They report that while VLMs excel in high-level obje...
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Declan Campbell @thisisadax.bsky.social · 05/02/2026
The visual world is composed of objects, and those objects are composed of features. But do VLMs exploit this compositional structure when processing multi-object scenes? In our 🆒🆕 #ICLR2026 paper, we find they do – via emergent symbolic mechanisms for visual binding. 🧵👇
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Sam Gershman @gershbrain.bsky.social · 03/02/2026
A new and improved version of TheoryCoder, which learns to play video games in a human-like way by synthesizing both high-level abstractions and a low-level model of game mechanics: arxiv.org/abs/2602.00929
arxiv.org
Learning Abstractions for Hierarchical Planning in Program-Synthesis Agents
Humans learn abstractions and use them to plan efficiently to quickly generalize across tasks -- an ability that remains challenging for state-of-the-art large language model (LLM) agents and deep rei...
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Cognitive Science Society @cogscisociety.bsky.social · 01/02/2026
Wait, it's February?! We're now about 6 months away from welcoming everyone to Rio for #CogSci2026 🇧🇷 Here's a quick weekly update with key dates and reminders you don't want to miss 👇
Graphic titled “The Cognitive Science Society Weekly Update.” The design includes the Society’s logo and a circular arrow with a checkmark, suggesting updates or reminders. The color palette is teal, white, and bright green.
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