Andrea Costantino
@costantinoai.bsky.social
📤 128
📥 220
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👀🧠🤖 cognitive neuroscientist @ Hoplab, KU Leuven | interested in vision and learning
pinned post!
Super excited to share a new preprint! We asked a simple-but-big question: What changes in the brain when someone becomes an expert? Using chess ♟️ + fMRI 🧠 + representational geometry & dimensionality 📈, we ask: 1️⃣ WHAT information is encoded? 2️⃣ HOW is it structured? 3️⃣ WHERE is it expressed? 1/n
6 months ago
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Andrea Costantino
Tomás Ryan
3 months ago
Do you work or study in the fields of psychology, neuroscience, computer science, artificial intelligence, or philosophy? What does the term 'representation' mean to you? We invite you to participate in a brief survey on key conceptual questions across fields.
eu.surveymonkey.com/r/VX9GNXM
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Andrea Costantino
Tim Maniquet
2 months ago
🔥 We have a new preprint! 🔥 It's really nice, I recommend reading it Here's a summary question: Can FFA activation predict RT to faces? ⏬ Check out the answer below ⏬
@hansopdebeeck.bsky.social
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.01.23.701404v1
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Andrea Costantino
Victoria Bosch
3 months ago
Returning home inspired after a great visit to KU Leuven, where I presented our work on CorText in the Brain & Cognition group. Thank you for the invitation and great discussions!
@hansopdebeeck.bsky.social
@costantinoai.bsky.social
(pictured: the magnificent architecture of the Liège station)
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Andrea Costantino
SueYeon Chung
3 months ago
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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Andrea Costantino
Saloni Sharma
3 months ago
Can the adult brain acquire typical representations after missing an essential early-life experience? New work with Marge Livingstone: “Early face deprivation leads to long-lasting deficits in cortical face processing”.
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.02.04.703627v1
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Andrea Costantino
3 months ago
New paper out at PNAS:
www.pnas.org/doi/10.1073/...
Revisiting the high-dimensional geometry of population responses in the visual cortex with
@jpillowtime.bsky.social
. The review took forever because a reviewer was doubtful our new estimator can infer eigenvalues beyond the rank of the data! (1/6)
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PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
https://www.pnas.org/doi/10.1073/pnas.2506535122
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Andrea Costantino
Alexander Huth
4 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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A wonderful surprise to see our latest study on expertise so beautifully explained by
@bjbalas.bsky.social
on
@lichess.org
. Go check it out!
add a skeleton here at some point
3 months ago
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Andrea Costantino
Joao Barbosa
5 months ago
Y’all are reading this paper in the wrong way. We love to trash dominant hypothesis, but we need to look for evidence against the manifold hypothesis elsewhere: This elegant work doesn't show neural dynamics are high D, nor that we should stop using PCA It’s quite the opposite! (thread)
add a skeleton here at some point
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Huh, funny. 40 years passed, but this is still so relatable
5 months ago
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Andrea Costantino
John Pearson
5 months ago
Not directly related to
@neurograce.bsky.social
’s comment here but to the thread: I am baffled by the number of people who seem to think the claim is that all brain computation is low-d vs. the *emprical* finding that task-related neural activity is (linear) low-d in many (not all) cases.
add a skeleton here at some point
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Andrea Costantino
Stefania Mattioni, Ph.D.
5 months ago
1. 🧵 Thread: What happens to the visual brain after early transient blindness? Our new Nature Communications paper examines a rare population: people born with dense bilateral cataracts—a short blindness occurring during a critical window of visual development. 🔗
rdcu.be/eQjMH
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Andrea Costantino
bioRxiv Neuroscience
6 months ago
Low-Dimensional and Optimised Representations of High-Level Information in the Expert Brain
https://www.biorxiv.org/content/10.1101/2025.11.12.688012v1
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Super excited to share a new preprint! We asked a simple-but-big question: What changes in the brain when someone becomes an expert? Using chess ♟️ + fMRI 🧠 + representational geometry & dimensionality 📈, we ask: 1️⃣ WHAT information is encoded? 2️⃣ HOW is it structured? 3️⃣ WHERE is it expressed? 1/n
6 months ago
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reposted by
Andrea Costantino
Hans Op de Beeck
6 months ago
New paper (and thread) on the representational dynamics of the main dimensions of object space:
jov.arvojournals.org/article.aspx...
1/n
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Representational dynamics of the main dimensions of object space: Face/body selectivity aligns temporally with animal taxonomy but not with animacy | JOV | ARVO Journals
https://jov.arvojournals.org/article.aspx?articleid=2811037
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Andrea Costantino
Tim Maniquet
6 months ago
It's finally out! Our work with
@hansopdebeeck.bsky.social
&
@costantinoai.bsky.social
is published. We went looking for dissociations between types of recurrence in DNNs, but we found something quite different.. hopefully that can tell us somehting about our models!
rdcu.be/eLwBA
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Andrea Costantino
Tessa Dekker
7 months ago
We’re hiring! We’re looking for two RAs to study neuroplasticity in sight loss, sight rescue and development in children and adults
@ucl.ac.uk
using a wide range of neuroimaging and behavioral methods. Please help spread the word! Apply by 16 Oct!
t.ly/q3aYe
#neurojobs
#NeuroSkyence
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Research Assistant at UCL
Recruiting now: Research Assistant on jobs.ac.uk. Click for details and explore more academic job opportunities on the top job board
https://t.ly/q3aYe
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Andrea Costantino
Steven Scholte
8 months ago
🧠 New preprint: Why do deep neural networks predict brain responses so well? We find a striking dissociation: it’s not shared object recognition. Alignment is driven by sensitivity to texture-like local statistics. 📊 Study: n=57, 624k trials, 5 models
doi.org/10.1101/2025...
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It was great reconnecting with friends and colleagues at
#CCN2025
in Amsterdam and presenting our latest
#expertise
work. We 👀 into how
#chess
experts represent the board, and how the content, structure, and location of these repr shift w/ expertise.⬇️
9 months ago
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Andrea Costantino
The Transmitter
9 months ago
Neural manifold properties can help us understand how animal brains deal with competing and multifaceted information, execute flexible behaviors and reuse common computations, writes
@mattperich.bsky.social
.
#neuroskyence
www.thetransmitter.org/neural-dynam...
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Neural population-based approaches have opened new windows into neural computations and behavior
Neural manifold properties can help us understand how animal brains deal with complex information, execute flexible behaviors and reuse common computations.
https://www.thetransmitter.org/neural-dynamics/neural-population-based-approaches-have-opened-new-windows-into-neural-computations-and-behavior/?utm_source=bluesky&utm_medium=org-social&utm_campaign=20250804-perspectives-neural-population-based-computations-behavior
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Andrea Costantino
Thomas Serre
about 1 year ago
🚨 New preprint alert! Our latest study, led by @DrewLinsley, examines how deep neural networks (DNNs) optimized for image categorization align with primate vision, using neural and behavioral benchmarks.
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Andrea Costantino
Martin Hebart
about 1 year ago
People talk a lot about objects, but what about the softness of a cushion, the greenness of an emerald, or the viscosity of oil? In our work just published
@pnas.org
, we shed light on how we make sense of the hundreds of materials around us.
www.pnas.org/doi/10.1073/...
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Andrea Costantino
Grace Lindsay
about 1 year ago
You know what I'd love to be able to do? Research.
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Andrea Costantino
Icelandic Vision Lab
about 1 year ago
Paper🚨 "Objects, Faces, and Spaces: Organizational Principles of Visual Object Perception as Evidenced by Individual Differences in Behavior" by
@heidasigurdar.bsky.social
&
@ingamariao.bsky.social
JEP:G editor's choice ->free to read
psycnet.apa.org/fulltext/202...
#visionscience
#psychscisky
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Andrea Costantino
Lina Teichmann
over 1 year ago
🚨PhD opportunity Fall/Winter 2025🚨 Join me in Geneva Switzerland
#unige
to learn more about colour perception. Using neuroimaging & computational modelling, you'll be working with an international & interdisciplinary team to understand how we transform light into a colourful world!🧠👁️🌈
#neurojobs
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